369. This #kanjipuzzle is about evolution. Start with one character, add a few strokes, and get another, then repeat. 一 -> ? -> ? -> ? -> 学

Answer:

一 -> 了 -> 子 -> 字 -> 学

一  ICHI, ITSU, hito(tsu) - one

了  RYOU - finish, complete, understand

子  SHI, SU, ko - child

字  JI, aza - letter, village

学  GAKU, mana(bu) - learn, study