Такаяма Марія

Maria Takayama is a supporting character from the Boku wa Tomodachi ga Sukunai series. Maria is the supervising teacher and moderator of the Neighbor's Club and is a nun. While being exceptionally gifted in academics, she can also be very rude and immature, when annoyed. She refers to others as "Rotten mandarin." She develops a sibling-like relationship with Kodaka, who regularly makes her packed lunches, and is affectionate with him, also stating that she wouldn't mind marrying him when she gets older much to Kobato's annoyance. She is also gullible, which Yozora uses to her advantage.

The reason why Maria cannot make friends is that she is an immature child prodigy whose wisdom stems not as much from natural talent, as from advanced education. Maria is childish and displays this tendency numerous times, even when claiming that she's an adult. While she may not realize this herself, Maria really wants to befriend Kobato, to the point that she felt jealous about how popular Kobato really is with her classmates. According to Kate, before becoming the Neighbor's Club's advisor, Maria was quite pessimistic. She feels a lot more comfortable in class than out of class. She says that she's real cocky with her grades and as such, has trouble making friends.

Her ability to make friends has apparently gotten worse since she started skipping grades.