(Reitaisai 13) [Saraband (Shimofusa Saburo)] Chen-chan no Chotto Ecchi na Hon (Touhou Project) | (例大祭13) [Saraband (下総三朗)] ちぇんちゃんのちょっとえっちな本 (東方Project) | Chen-chan no Chotto Ecchi na Hon