Our beloved Kouhai who got captured by small Oni and got impregnated. Even though we the player try our best to keep our Mashu pure and unstained, it appears we failed here. So now we get NTR'd by some small time Oni who impregnate Mashu and she eventually gives birth to her first child(sorry Ritsuka looks like you won't get that honor). Its also great Mashu has big boobs so that she can feed her new baby. Although I doubt she's happy about the whole thing, let alone knowing she is this things mother lol.

Artist: https://www.pixiv.net/en/users/353422