Yagami-kun no Katei no Jijou

Yagami-kun's Family Affairs follows Yuji Yagami, a high school student with a problem: his mother, Nomi, looks very young and Yuji has a crush on her. To complicate matters, his high school homeroom teacher is also infatuated with her due to how young she looks. Nomi is oblivious to all of this and is head over heels in love with her husband, Yoji, and frequently displays this affection very publicly, which causes more embarrassment for Yuji.Yuji's high school friends constantly tease him about his "mother complex". When Valentine's Day comes around, though, Yuji receives a box of handmade chocolates. The name on card can be read multiple ways, the most common way being Masayuki Ikari, a male name, so his friends tease him throughout the day until it's time to meet the person who sent the chocolates at the front gate after school.The girl who sent the chocolates (the name is actually read "Mayuki") starts meeting him after school so they can walk home together, and they eventually become an item. The remainder of the story follows Yuji and Mayuki as their love grows and as Yuji works to resolve his "mother complex" issues.