Yamada-san to Chikubi ga Yowai Ogawa-kun

Ogawa admires Yamada, his senior at work. So when she suddenly invites him — a masochistic man with a sensitive body — to have sex with her at a hotel, he's gonna find some intense nipple teasing waiting for him! (Source: Melonbooks, translated) Note: Released at Comiket 103, 104.