2057. This #kanjipuzzle is about evolution. Start with one character, add a few strokes, and get another, then repeat. 一 -> ? -> ? -> ? -> 煮

一 -> 十 -> 土 -> 者 -> 煮  

一  ICHI, ITSU, hito(tsu) - one

十  JUU, tou, to - ten

土  DO, tsuchi - earth, soil

者  SHA, mono - person

煮  SHA, ni(ru), ni(eru) - boil, cook