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

Answer:

一 -> 十 -> ホ -> 米 -> 番 -> 審

一  ICHI, ITSU, hito(tsu) - one

十  JUU, tou, to - ten

ホ  Katakana "Ho"

米  BEI, MAI, kome - rice

番  BAN - number, watch, order

審  SHIN - hearing, investigation, trial