If you're looking for manga similar to Kawari Nadeshiko: 3 Shimai no Himitsu, you might like these titles.
In order to stop their beloved middle sister from moving out with her boyfriend, two of the sisters try to seduce Naohito so that Chisato will break up with him. Will Naohito be able (not) to fall into their trap? None of Chisato's ex-boyfriends ever succeeded.
My stepmom's 10 years older than me, but she doesn't look like it... Is she... trying to tempt me?
When Akiyama booked a vacation for him and his girlfriend at Koibana Onsen – a place known for helping unite couples both mentally and physically – he had no idea that they’d break up days before the trip. After arriving solo and meeting the onsen’s three sisters, not to mention getting the ‘special treatment’ from each of them to help him feel at home, Akiyama decides to stay and work part time. Now, with one of the sisters as his newfound girlfriend, Akiyama will work together with the trio to help make each couple’s visit a pleasurable and exciting success, in addition to losing his virginity and discovering the ultimate pleasure himself…
I was forced to let my friend's youngersister live at my place. She doesn't even payrent or do any of the housework! This isn't fair!
A noisy little family, a cheerful group of classmates, and a boy, born on the first year of the lunar calendar living a never changing life. Then one day he notices a girl in his class shrouded in mystery. Her name is Makina. However, the boy just can't seem to bring himself to talk to Makina. Then one day, before the first lunar calendar month, another mysterious beauty appears. Her name is Rushia, and as she leans in as if she is going to kiss him, she tells him about a mysterious power hidden inside him called "Snake Eyes"...
Satou Yukinari has a very strange medical condition: he ejaculates diamonds. But like all fortunes, it comes with a price. These special gems are worth untold riches, but each one he spurts out cuts a year off his life span! As word spreads of his condition, a trio of beautiful seductress witches descends, starting in his hospital room. Yukinari must overcome sexy but deadly temptation if he wants to live, but boy these witches are persistent!
A pair of young newlywed couple decides to return to their hometown, where the husband has taken to working as a delivery man and that's when he finds himself being seduced by the mysterious lady who lives in the mansion with a garden of roses.