Yuna-senpai no Shiranai TokoroNew由奈先輩の知らないトコロ; Yuna-senpai's Hidden Depths; A verdadeira Yuna-senpai

I started dating my crush, Yuna-senpai, and my life became a dream...! At least until I realized there's a (physical) side of Yuna-senpai that I've yet to see... I want to know everything about the girl I'm interested in!