Bishoujo Houkai

1, 6. Tennis-bu Buchou Ejiki (テニス部部長餌食); Comic Mujin 2010-02, kakioroshi
2. Tensai Shoujo Houkai (天才少女崩壊); Comic Mujin 2009-04
3. Tenkou Shoujo Houkai (転校少女崩壊); Comic Mujin 2010-04

4. Shigekiteki Kairaku Densha (刺激的･快楽電車); Comic Mujin 2009-01
A girl moves into the countryside where public sex is evidently normal. She lies to her friend and claims that she's had sex and doesn't find it exciting. Then takes up a challenge to go on a train ride...

5. Iinchou Chijoku Choukyou (委員長恥辱調教); Comic Mujin 2008-10