please help me find these mangas

1. manga where both fl and ml are popular and are keeping up appearances / have a hidden personality that they dont show to others. If i remember correctly, the guy's name is Ninomae but the girl calls him Ikoku

2. manga about a kindergarten kid who can see and fights youkai. Her mother seemed possessed. Kid's name is Kaya

3. Fl has a trauma with yankees, ml is a former yankee. Theyre both in high school, ml acts like he's just an average studious guy