My Senpai is Bad for My Heart

Inohara, a scary-looking university student with zero friends, has his life thrown around by his handsy senpai, Maki. "I've got a lot of moles all over my body... Wanna count them sometime?" His suggestive attitude, his seductive gestures... Why is it that Inohara's heart acts so strangely around Maki? A pure love story between a tough virgin university student and a caring graduate student ☆

(Source: Renta!)

Note: Chapter count includes an extra.