Sayaka lives on the second floor of Takuya's apartment. She is really clumsy and kind of cute.

The story begins with a pair of young lovers, the busty Mizuho-chan, and the well endowed Hiro-kun. One night Hiro suggests that Mizuho should try swimming to get in shape. He even offers to coach her after hours at the pool where he works since she can't swim very well. Mizuho's new workout plan turns out to be much more exciting than expected... 
Meanwhile Takuya-kun finds himself in a compromising situation with his clumsy but beautiful neighbor Sayaka-chan... 
Each episode features couples enjoying various sexual escapades involving plenty of water, wet bodies, &amp; extremely revealing mizugi (swimsuits).

1. Shiroi Yuuwaku (白い誘惑); Comic Kairakuten 2007-07 
2. Summer Jumbo Mizuho! (サマージャンボみずほ！); Comic Kairakuten 2006-11 
3. Mizuho! Exercise! (みずほ！エクササイズ！); Comic Kairakuten 2006-06 
4. 1+1 Kanojo (１＋１彼女); Comic Kairakuten 2007-03 
5. Akari no Trouble (明かりのトラブル); Comic Kairakuten 2007-04 
6. Omizu no Trouble (お水のトラブル); Comic Kairakuten 
7. Araikko (あらいっこ); Comic Kairakuten 2006-09 
8. Karenna Tehodoki (可憐な手ほどき); Comic Kairakuten 2006-10 
9. Tokimeki Version Up (ときめきバージョンアップ); Comic Kairakuten 2006-08 
10. Marshmallow Morning (ましゅまろモーニング); Comic Kairakuten 2006-04 
11. Houkago (放課後); Comic Kairakuten 2005-01 
12. Danin - Onmitsu Kunoichi Injoku Emaki (堕忍 ～隠蜜くノ一淫辱絵巻～); Comic Kairakuten 2007-06 
13. Mizugi Kanojo: Mizuho Toki wo Koete (水着彼女 ～みずほ時空を超えて～); kakioroshi

1. Hitou! Tsurunoyu Onsen (秘湯！鰐の湯温泉); Comic Shitsurakuten 2010-04 
2. Ama Raba (あまらば); Comic Shitsurakuten 2010-06 
3. Recycle Girl (リサイクル・ガール); Comic Shitsurakuten 2010-02 
4. GoGo Girl! (GoGoガール！); kakioroshi 
5. Kusuri no Trouble? (くすりのトラブル？); Comic Shitsurakuten 2009-12 
6. Ketai Bitch (ケータイぴっち); Comic Shitsurakuten 2011-07 
7. Tour de Romancev (ツール・ド・ロマンス); Comic Shitsurakuten 2011-06 
8. She Sea Summer; Comic Kairakuten 2010-10 
Ken is talked into going to the beach by his friend Ryou, who claimed there were two girls waiting for them. As it turns out it was a ploy instigated by Ryou and his girlfriend Akiho, to hook Ken up with Hime. 
9. teach me!; Comic Shitsurakuten 2010-12 
10. Touch&Love (タッチ＆ラブ); Comic Shitsurakuten 2009-06 
An unlucky man decides to molest a girl on the train, but that girl turns out to be an old friend from school. 
11. momo@chat; Comic Shitsurakuten 2009-04 
Momo-chan tooks a part-time job at a live sexual chat to earn some pocket money and things turns out to be good for the people on both side of the camera. 
12. Kitsuiyo, Saki Sensei! (きついよ咲先生！); Comic Shitsurakuten 2008-12 
A coach has sex with her student after practice. 
13. Uta-Hime (うたひめ); Comic Kairakuten 2010-01 
An unlucky man decides to molest a girl on the train, but that girl turns out to be an old friend from school. 
14. Al Dente (あるでんて); Comic Shitsurakuten 2011-04 
15. one's eyes; Comic Shitsurakuten 2009-08 
16. Mizugi Taisen (水着大戦); Comic Kairakuten 2009-09

1. Splash Splash! Busters! (パシャぱしゃバスターズ); Comic Kairakuten 2012-07 
2. She Sea Girls; Comic Kairakuten 2011-10 
3. Bokura no Seifuku Project (ぼくらの制服プロジェクト); Comic Kairakuten 2012-04 
4. Gyu Gyu Girl (ぎゅうぎゅうガール); Comic Kairakuten 2010-09 
A girl, who likes living in a small room, invites her boyfriend over, but the small amount of space in the room leads to an interesting situation. 
5. Pai Satsu! (パイ撮!); Comic Kairakuten 2010-11 
6. Mousugu Oniichan (もうすぐお兄ちゃん); Comic Kairakuten 2011-04 
A stepbrother masturbates to his sexy soon-to-be-stepsister... And she takes it further. 
7. Osanana Chichi (おさななちち); Comic Kairakuten 2012-06 
8. Paitan Soup (白湯スープ); Comic Kairakuten 2011-02 
A couple visits an onsen for their trip. But because things haven't been going well with their love life, this may turn out to be their last trip together or will it... 
9. Tokidoki Ii Koto (ときどきいいこと); Comic Kairakuten 2012-01 
10. Tonari no Meiwaku-san (となりの迷惑さん); Comic Kairakuten 2009-06 
11. Watashi no Sensei (ワタシの先生♥); Comic Kairakuten 2011-12 
Chitose likes Shiraishi-sensei because of all reasons the students hate him, so she tries to win him over. 
12. Iinari Kajitsu (いいなり果実); Comic Shitsurakuten 2008-10 
Two guys take advantage of a fruit selling girl on the day before their departure off the island. 
13. Sayaka Sunday (さやかsunday); Comic Kairakuten 2012-02 
14. Nightmare (ナイトメア); Comic Kairakuten 2011-08 
After having a bad dream, will treating Satou like a hugging pillow help Runa sleep soundly?