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

Answer:

ノ -> 八 -> 父 -> 交 -> 校

ノ  Katakana "No"

八  HACHI, ya(ttsu), ya(tsu), ya, yo - eight

父  FU, chichi - father

交  KOU, maji(ru), kawa(su) - mix

校  KOU - school, printing proof