Read Sawaranu Futari Wa Nani Wo Suru manga
“I swear I’ll never touch you again.” “So won’t you try… something more exciting than sex with me?”
Otaku office worker Amemiya Touko has fallen in love with her section chief Hasu Souichirou. After getting some help from a supporter from the sidelines, the two end up together and she confesses — only to get shot down. But Amemiya, realising Hasu had lied to her, chases after him but suddenly his breathing becomes rapid and he collapses!