Really good shoujo/josei

A classic in shoujo
Their relationship is so endearing, with a strong power lead, and a male lead that is possessive and also strong, but in a subtle and respectful way

Strong female lead/possessive male
Quite a story
Shin is a high school boy who distrusts women, thus, he break couple and sleep with them on an almost daily basis. Sakura hates him for that (and damn she's right gurl), but there is really great character development, and they really grow on you : you want to know what happens to them.
Plus, the style is from the 90s, you may or not like it, I live for this

Yakuza
Strong female lead
So good