If you like a story with a lot of sexy situations and harem, Yuuwaku no Hanazono is a good choice.

1. Hanazono (花園); Comic Momohime 2006-05
2-3. Man-ken (MAN研); Comic Penguin Club Sanzokuban 2006-06, 07
4. Okaa-san to Issho♥ (お義母さんと一緒♥); Comic Penguin Club Sanzokuban 2006-09
6-7. Man-ken Moratoriu...