隠れて付き合っている完璧な天使様が、実は『経験済み』だなんてきっと誰も思わない。 (Associated Names)

“Shall we do something naughty…?” The “Angel”… Hiiragi Hina, a stunningly beautiful, academically and physically gifted girl, suddenly started inviting me—a serious class representative—into her “naughty” schemes one day…!? “I want to score your perfect 100, Chisa-kun.” —And so, my romance with the “Angel” had only just begun.