Since childhood, Tenko was aware that her friend, Ouma Souta, was overly attached to her, but they were able to maintain their friendship as they weren't romantically involved in each other. When going to the university, Souta becomes the most popular guy but also a jerk who constantly swaps girls. One day, Tenko tells Souta to stop being so attached to her, as she has a new boyfriend now. Then Souta becomes more intimate with her, more than before, and...? 天子(てんこ)は幼馴染の王馬颯太(おうま　そうた)が距離感が近いことに悩んでいたが、 お互い恋愛対象ではないから保っている関係だった。 颯太は大学内で1番のモテ男くんで、女の子を取っ替え引っ替えしてる嫌なやつ。 ある日、天子に彼氏ができたから、 今まで通りの距離感ではいられないと伝えたが 颯太がいつも以上に迫ってきて・・・・・? 幼馴染の嫉妬モノです。 溺愛されていますが読後感は暗め。