The captain of Team B.
- Breast Expansion Some of the fans accused her of getting breast enhancement surgery and she angrily denied the accusations.
- Fan Nickname Yukirin
- Large Ham Usually very feminine and ladylike, but she goes all out when reacting to something.
- The Ojou
- Reaction Shot There's a reason she's called the "Reaction Queen"
- Cute but Cacophonic Subverted. Although she has one of the highest pitched voices in AKB48, her singing voice is really quite nice and cute.
- Fan Nickname Mayuyu
- Otaku Surrogate Self proclaimed!
- She even have an unofficial group, aptly titled Ota4, aka Otaku 4 with 3 other members.
- Robot Girl Members of AKB jokingly call her CG ("Cyborg Girl") due to the fact that she doesn't sweat at all.
- Fan Nickname Kitarie
- Berserk Button At a handshake event Tomomi became very pissed off when some fans called her "ero" (sexy).
- Fan Nickname Tomo~mi
- Fan Nickname Nacchan
- Fan Nickname Myao
- Fan Nickname Komorin
- Fan Nickname Harukyan
- Fan Nickname Kana
- Fan Nickname Nacchi
- Fan Nickname Shihorin
- Fan Nickname Mariyannu
- Fan Nickname Chikariina