Welcome back to Miyajima Island! Without spoiling too much of the first game, the Onigokko! FanDisc has after stories for each of the game's heroines! In case you've ever wondered how things shoot out between you and your favorite girl from the first game, or just wanted to experience a little more of what made her so magical, this fandisc has it!
But in addition, we've got a little extra for you; an imouto route, for all of you sister-lovers out there who felt like the first game left you wanting! Want no more, for that wrong is righted here, as Keisuke's sister has her own fully playable story!

[From JAST]