Jougasaki Momo

"Oh... I'm out of tobacco, I can open beer now because I am not motivated!".

Momo is Tetsuo's guardian/oneesan/coworker. She is a heavy-drinker and a heavy-smoker and she is actually thirty, though she looks twenty. She is also a brilliant (genius-level) individual as well as being highly perceptive when it comes to people in general. She and Tetsuo have lived most of the last ten years around one another, and they know each other about as well as it is possible to know another person without being them.