Rinnosuke said: Then I will be big brother to the both of you.
You're doing it wrong Kourin, I would be big brother to all four of them. The onee-chans AND their imoutos would all be MY imoutos!
Let's see...EheheReally? But the underground seems quite interesting, too...Arfrfrfn~Oh...So something like that happened, huh?...be big brother to the both of you.Just kidding.Well then, why don't we try living at the other person's place?There, there.I can't do it after all!!SlamHmm...Having two younger sisters sounds nice, too...Say, Flan...It must be nice to live in such a beautiful Scarlet Devil Mansion...Gagan!!So that means my older sister will be Satori-san... and you will be my older sister's younger sister?~Later~That was supposed to be a joke...Oh?!Flan?!Huh?!Then I will...Really?!Huh?!Whaaaat?! My plan is...!