The serious honor student Tsutomu falls into the trap of a devilish junior girl and becomes a prisoner to the pleasure....

(Source: cmoa, translated)

Note: Initially published as a doujin in 3 volumes;
- Yuutousei Danshi no Otoshikata ~Ichigakki~ (優等生男子の堕とし方～一学期～)
- Yuutousei Danshi no Otoshikata ~Natsuyasumi~ (優等生男...