Don't be fooled ! This is part of the Kurogane series but it is not a VN and it is not easy. This is a richii mahjong game and it is not beginner or westerner friendly. The 100% requires to win 11 tournaments (10 games per tournament) at the very minimum and you will play much, much more than that if you suck like me. The highest scoring player at the end of the game wins. Games are 10 rounds or if any player gets in the negative, the game also automatically ends.
If you persevere though, this is definitely doable. I had never played mahjong in my life and managed to get this done. It is also pretty fun. The trophy list is also very simple and this is a great game to pick up and play in short sessions.
I will not explain how to play mahjong as part of this guide as it is quite a complex game. What I will say is that 99.99% of the time, I focused on winning calling richii and that was enough to do the whole game.
Character Screen
The first character you pick is the one you will play with. The other 3 are the ones you will play against and they do not matter so pick any. Your character will always be the one in the bottom left when you play.
ゲームスタート
This either pops on the main menu or as soon as you start your first game. Unmissable either way.
正宗で1位
Win a tournament with the character in the picture.
姫で1位
Win a tournament with the character in the picture.
天国で1位
Win a tournament with the character in the picture.
虎鉄で1位
Win a tournament with the character in the picture.
玉鋼で1位
Win a tournament with the character in the picture.
国綱で1位
Win a tournament with the character in the picture.
平で1位
Win a tournament with the character in the picture.
一期で1位
Win a tournament with the character in the picture.
ミカサで1位
Win a tournament with the character in the picture.
摩耶で1位
Win a tournament with the character in the picture.
雷で1位
Win a tournament with the character in the picture.
全てのキャラを使用
This is for playing 1 full game with each character. Unmissable since you will be winning 1 game with each character anyway.
全ての壁紙入手
This trophy is the main goal of the game. You will have all other trophies already unlocked by the time you get this one. You will need to unlock ALL wallpapers. It will unlock at the end of a game if you have met the requirement for the last wallpaper (won't pop mid-game and do not have to check wallpapers once you have them all). Read below on how to unlock all wallpapers.
There is 3 "types" of images. The 1st type is images like the first one in the picture below. These are for playing 5 full games with the character. Number of plays can be viewed on the character screen (see picture above).
The 2nd type is like the 2nd image in the picture below. I will admit I'm not 100% sure what it is for but I'm 99% sure that it is for winning 10 hands/rounds across all games while playing with that character. Hands are only saved if you finish the whole game.
The 3rd type is images like the third one below. This is unlocked by winning a game with that character (which also unlocks a trophy). Be mindful that not all characters have 3 images but they all have at least 2. The wins look a little different on the 2nd page also.
The last 3 images in the last screen are for playing 5 times with each characters, winning with all characters and unlocking all other images.
Wallpapers screen 1
Wallpapers screen 2