Nayuta and Miyako walk in on Itsuki, who was naked in front of the bathroom mirror, trying to act out the little sister character in his new volume. Itsuki is everything to Nayuta, and Miyako secretly has some feelings for Itsuki, but Nayuta also cherishes Miyako because she showed her compassion in her time of need. Nayuta invites Miyako to the hotel she’s staying at and immediately gets naked. She then asks Miyako to also get naked for some kind of research for her novel...
Why was he able to use magic 
once he kissed his little sister?
Warum kann er erst zaubern,
wenn er seine kleine Schwester küsst?
¿Por qué podía usar magia
después de besar a su hermana pequeña?
¿Por qué podía usar magia
después de besar a su hermana pequeña?
Pourquoi il obtient des pouvoirs
en embrassant sa sœur ?
Perché poteva usare la magia
solo dopo aver baciato la sua sorellina?
Por que eles conseguiram usar mágica 
depois de beijarem suas irmãs mais novas?
Почему герой может колдовать
только после поцелуя младшей сестры?