If you're looking for manga similar to Samurai Harem: Asu no Yoichi, you might like these titles.
Tachibana Sango is a poor student looking for a decent place to stay on a shoestring budget. When it appears that he has found the perfect place, it turns out to be anything but, as his new roommates, a trio of young ladies, seem determined to run him ragged and make his life miserable.
Takaho was pleasantly surprised when it was announced that her older cousin, Fujistsugu, would be moving in with them. He was her first crush and she was hoping to deepen her bond with him as a little sister. Little did she know that her seemingly handsome and perfect cousin was actually—
Hiromi Sonoda has no girlfriend, no job, and no home, until he finds a shared-house with very cheap rent and goes to check it out. However, the share-house has a certain condition...
In an alternate version of early 21st century Japan, the Tokugawa Shogunate has remained in power for over 300 years. In this reality, student councils are tasked with oppressing schools. Yagyuu Muneakira is a high school student who rebels against his student council with the help of girls who've had the names of famous samurai heroes passed on to them.
Makabe Masamune has changed himself greatly for a single reason: he wants revenge. Contrary to his past, he has worked hard to become good-looking in order to carry out this goal. Faster than anticipated, he even meets the target of his revenge the first day after transferring in.. Adagaki Aki! He wastes no time beginning his plan, but revenge doesn't come easily.