The trophies have been ordered in order you will unlock them so simply follow along the trophy guide to unlock everything. Most of the trophies are unmissable and you can chapter select at the end of the game in case you missed anything. You can pick any dialogue options for the whole game except for the trophy Play-Hard-to-Get Master at the beginning of the game. DLC guide is at the end of the main game guide
Trophy guide / Trophy walkthrough
At the beginning of the game, you will offer YUA a coffee.
1) Offer her the Americano and select the dialogue choice "Do you want something else" after.
2) Select the Cafe Latte
Woof Woof! [You made her a delicious Café Latte.]
3) Quit to the main menu at the dialogue choice and continue the game. Pick the Cafe Machiato this time.
Coffee Master [You made all the types of coffee.]
After serving YUA a coffee and taken couple pictures of her very early in the game, she will ask you to be her photographer. Simply refuse the offer twice by picking the 2 options below before agreeing:
2) I'll think about it.
2) Eh, No. I mean, why should I ?
Play-Hard-to-Get Master [You refused YUA's request two times.]
UNMISSABLE. Will pop right after agreeing to be her photographer
A shot of a Lifetime [You made a photoshoot appointment with YUA.]
UNMISSABLE. Will pop while you show her your pictures in the classroom on your PC
Practice Like You Play [YUA liked the photo you took as practice.]
You will be back at the Cafe and will have to make a smoothie for YUA. Simply pick the bananas and strawberries as your ingredients (Top left and bottom left ingredients). Quit to the main menu and continue once the trophy pops.
Sweet and Sour [You discovered the flavor YUA likes most.]
You have to make all kinds of smoothies for the next trophy. You should already have picked the left column ingredients (banana and strawberry) so just pick the 2nd column now. Play until you get to the dialogue choice and quit back to the main menu. Repeat this step and pick the third column now. Finally, repeat the steps one last time and pick the top right and bottom middle items (kiwi and cheese)
Smoothie Master [You made all the types of smoothies.]
Shortly after giving her the smoothie, YUA will offer you pink cookies. Simply pick and "eat" 5 cookies (hold 
by bringing them to your "mouth" with the controller) for this trophy. You have to be a little fast or the game will move on after you ate one.
Were You Hungry? [You ate 5 cookies.]
UNMISSABLE. Will pop soon after giving her the smoothie after you give her your framed picture
The Man with the Plan [You gave YUA the best present.]
UNMISSABLE. Will pop after the elevator scene
Moment of Phantasmagoria [You endured the moment of tension with YUA.]
This next trophy is simply for taking 100 pictures. I recommend to do it on Molly Island as there is MANY opportunities to take pictures there. Simply check your camera with 
once in a while and take 10 pictures anytime you can until it unlocks. Make sure to keep at least 1 picture as you will need it later on in case you want to make some space !
Photo Master [The number of photos in album is reached to 100.]
After seeing YUA's swimsuit and matching bracelet on Molly Island, she will go near the water and you will have to move next to her. Simply hit once you are next to her to push in the water (Dualshock) or push her using the PS move. This can be missed if you don't push her fast enough.
Don't Try This At Home [You pushed YUA in.]
UNMISSABLE. Will pop after you give her bracelet back
Picked Up on the Way [You found YUA's important bracelet.]
UNMISSABLE. Will pop right before the credits roll. Let the credits roll for an extra scene and to unlock Cafe Iris after the "thank you for playing" screen.
Solo Escape [YUA, only the best for you]
Back at the main menu, select Cafe Iris to unlock this trophy. You have to watch the extra scene post-credit to unlock the cafe. (I had to select a chapter using the book on the left for this trophy to unlock on the JP stack)
Alone Time [You enjoyed some free time alone at the café.]
Now, select the laptop using the arrows on your controller. Select any chapter and picture and export it to your PS4 for the trophy.
Life of the Popular [You used the SNS function.]
Studio Pack DLC
Only 1 dialogue choice matters for this DLC so feel free to select anything when not specified.
From the main menu, select the Smile Studio option.
Pick up your phone and call the 4th contact: Fortune Teller
Call 1st contact: Yua
There is 2 possible scenarios that can happen here. One will get you a trophy while the other won't. I have never gotten the trophy scenario on my first time so I'll assume you did not. If you did just skip this step later on in the guide.
Choose the basket icon and select something to equip in every slot for Yua (including the 6 slots in the diamond icon). Load the level with the right option.
Full Makeup [The fanciest model is born.]
Pick any location to take a picture (the tree for example). As soon as it is available, hit to open your camera and then 
to activate beauty mode. Take a picture.
Photo Filter Master [You took a shot while on beauty mode.]
Now, talk to Yua and select the last option twice to get back to the studio.
Select the basket again and change the last setting (mountain icon) to a different setting. Load the level and quit as soon as possible (last option). Repeat this one more time with the third and last setting.
I hate Winter [You spent seasons with YUA except winter.]
Now select the 2nd option (camera icon) and only change the first setting so Yua has a skirt. See spoiler below for an example of a costume. Load the level.
3) Could you keep on moving
Keep select the following option until the trophy pops (x3-6 times)
2) Let's try some cool jumping shots
Jump [You tried to make YUA in a skirt jump.]
Keep selecting the last option to get back to the studio. Pick the same location (camera icon), change the mountain icon setting and load the level. Repeat this step for the last setting.
Natural Born Model [YUA matches well with any color.]
Now select intro on the far right. Call the fortune teller and then call Yua. If you get the sleeping scenario again, you can hit pause and exit to title and repeat the process until you get the other scenario. Once you get through the scenario starting with "Hello" this trophy will pop:
Envious brother [YUA had a little brother.]
Now that you are back at the studio, select exit on the far left. The next choice is the only choice that matters. The trophy will unlock before getting back to the main menu.
2) Hmm....
Cell Phone Check [You checked YUA's Cell phone.]
Easy so far? This is where it gets annoying 
The last 2 trophies are RNG and can take 2m like they can take 1h. Just keep at it !
If you somehow already got the trophy below skip ahead. Now we will have to keep redoing the intro and calling the Fortune teller. You will always get the same message until you reload the intro so don't bother trying to keep calling.
From the studio, select intro on the right and call the fortune teller. If you get the wrong message you can quit right away to the main menu and try again. The message is "Tomorrow is your lucky day. Try something new". This took me over 30 times on 1 stack and 3 times on another.
Lucky Day [Tomorrow is your lucky day!]
For the final trophy, select Smile studio from the main menu and exit with the left option. Keep repeating these 2 steps until Yua starts dancing when you exit. This took me around 15m on 1 stack and almost 1h on another 
Dance Master [YUA, you were good at dancing...]
100th Day DLC
You need to have finished the base game to access this content. I suggest you backup this game each time you finish a DLC because I don't think this will be the last one...
Pick 100th day on the main menu. Choices don't matter except stated otherwise. I suggest to always pick the first choice if not stated just in case.
We will have to do 1.5 playthroughs of this one (don't worry it's really short). We'll be as nice as possible to Yua on this 1st playthrough. I've done some tests and it seems only 1 choice truly matters for this. I've listed 3 important choices here but it seems like only the 1st one matters:
- Tell her she sung like an angel after the karaoke (the only one that seem to matter)
- Get her the corgi plushie
- Tell her she was waiting for you to come to the park when on the carousel
DLC Start
You'll talk to your friend following by your sister. Pick this option when available (11th choice):
2) Lol you ?
Good Siblings [They are such close siblings.]
Fill the photo album with any pictures and select a BGM. Confirm it's complete
The Life of a Boyfriend Is Hard [Completed the photo album.]
As soon as you get to Corgi land, close the game and backup you save to the cloud or USB
Reboot the game and select Continue
Pick up the tambourine on the bench next to you ( ) when Yua is singing and shake your controller until a trophy pops.
Having so much fun [Made sure Yua had fun. Hooray !]
As a reminder, select this choice after the karaoke
2) It was like hearing the voice of an angel ! (This locks you on the "true" ending)
You'll soon have to win a toy for Yua in a claw machine. You want to pick the dog plushie on the first try and moving the X & Y axis only once each. Quit to main menu and continue if you mess up.
So Cool! [Grabbed a stuffed animal while only moving once on each axis.]
Professional Claw Machine Player [Pulled the stuffed animal that YUA wanted in one try.]
This will pop at the end right before the credits if Yua asks you to tell her you love her.
I Love You ! [Actually, YUA, I love you!]
Load the backup save you did earlier. You'll be back on Corgi Island. This time make sure to tell Yua you couldn't hear her after the karaoke. I've listed 3 choices again but this seems to be the only one that matters:
- Tell her you couldn't hear the singing after the karaoke (Choice 3))
- Fail to get the corgi plushie
- Tell her the park just recently opened when on the carousel
You will soon be at the claw machine again. Deliberately fail to pick a toy by clicking on the third button right away x3.
It's Okay ! [It's okay. You did your best]
She should ask you to tell her you like her this time before credits roll.
I Like You ! [I Like You, Yua!]
Season Event DLC
Yes another new DLC ! This one is free. Go to your date and time settings and change the date to December 25th. Reboot the game and you'll get right into a short extra scene. The trophy will pop after the scene.
Happy Christmas [Happy Christmas]
Go to your date and time settings and change the date to February 14th. Reboot the game and you'll get right into a short extra scene. Pick up the third card (heart) when asked. This is very important to get the trophy and there doesn't seem to be any way to replay this event. The trophy will pop after the scene. If you somehow picked up the wrong card you will have to replay the scene from Cafe Studio.
Valentine Magic [Valentine Magic]
Go to your date and time settings and change the date to August 1st. Reboot the game and you'll get right into a short extra scene. The trophy will pop after the scene.
Cool Summer [Cool Summer]
Go to your date and time settings and change the date to October 31st. Reboot the game and you'll get right into a short extra scene. You will have a choice between choosing Devil Yua (1st choice) or Angel Yua (2nd choice). Pick any to get a trophy then go to Cafe Iris from the main menu and replay the event from the scrapbook on the left and pick the other choice.
Dark Halloween [Dark Halloween]
White Halloween [White Halloween]
Grats on the 100% ! Go stack it now 
5 
30 
) - Base: 16 (1 
. All good now.
