Otouto wa, Ookami.

1-3. Otouto wa, Ookami.
Misako's father remarried a week ago and her step brother turns out to be the school's most popular guy, Aizawa Hiroki. Giving the appearance of a gentleman it turns out he's a huge playboy, trying to "capture" her to prove they can't be a family!?

4. Kimi Fechi

5. Kanzen Date Manual