|Relatives||Yoshino Saionji (Maid)|
Kotomi Sanada (真田コトミ Sanada Kotomi) is a main character and a female protagonist in Akiba's Beat. She is a 17 year-old high school student who had stopped attending. She is a rich girl, being the daughter of a prominent Sanada family in Akihabara. She had grown up with the family maid, Yoshino Saionji, from her young days and has her as an attendant in Akihabara. Kotomi has a sharp mouth and a commanding tone due to her prestigious upbringing.
She carries the title, "The Merciless, Peerless, Poison Doll" (冷酷無比なポイズンドール).