Kitazono Haruhisa has always been popular with the ladies! But then underclassman Io appears, and all the girls including Haru's girlfriend leave him to fawn over Io. An annoyance at first, Io is soon smitten with Haru thanks to a certain incident. He's good-looking enough to get more girls than Haru, but this dang pretty boy Io just trails after Haru like a loyal pet and gazes at him so passionately... That's nothing to feel good about!! These past ten years, Haru has let Io's affection go to his head, but now...?
陽久はモテてきた――！
だけど彼よりモテる後輩・勇生が現れて、彼女も女友達もみんな陽久から離れていった…。
そんなムカつく後輩だけど、あることがきっかけですっかり懐かれる。
自分よりモテる容姿端麗の美少年、そんな勇生が忠犬のように自分だけを慕い、熱い眼差しを向けてくる…、こんな気持ちのイイことはない!!
この10年間、勇生からの好意に慢心していた陽久だけど――。