Sarawarete Ai no Mori

Sarawarete Ai no Mori (さらわれて愛の森)

Yaoi-loving hikikomori, Issei, loves voluptuous older guys. One day, his "ideal" old guy, Mochidzuki, smashes through his door. In a forest full of men, Issei's bad side awakens within him, once he knows Mochidzuki's true feelings. Toyed with by Issei, Mochidzuki's secretly lewd body responds.

Kimi-iro Koishi (君色恋し)
Harenchi Sennyuu Sousa (破廉恥潜入捜査)
Akunaki Omega!! (飽くなきオメガ！！)
Match Up!! (マッチアップ！！)
Fundoshi Shugyou (ふんどし修行)
Sakaiya-sensei no Fundoshi Kyoushitsu (堺屋先生のふんどし教室)

(Source: Nakama, edited)