Ore no Koigokoro ga Moteasobareteimasu
俺の恋心が弄ばれています
A twin who is an influencer decides to use a kind, unassuming underclassman named Yachiro to distract his ex-boyfriend. Yachiro agrees to pretend to be his boyfriend, and the ex enjoys the charade. When Yachiro changes dramatically after losing weight, he begins to experience unexpected feelings.