decided to fill out the achievements i'm missing while 0.12 downloads and was wondering: what are the achievements after having sex with yui 15 times? is it related to all the side girls without portraits?
Not all achievements are yet obtainable in the game. The grindy ones involve lewdling a lot each of the 21 girls. Picking at least once everyone in the beach event. And completing the pool one, with Suzume too.