2495. This #kanjipuzzle is about evolution. Start with one character, add a few strokes, and get another, then repeat. 一 -> ? -> ? -> ? -> ? -> ? -> ? -> 障


一 -> 二 -> コ -> 口 -> 日 -> 早 -> 章 -> 障  

一  ICHI, ITSU, hito(tsu) - one

二  NI, futa(tsu), futa - two

コ  Katakana "Ko"

口  KOU, kuchi - mouth

日  NICHI, JITSU, hi, ka - sun, day

早  SOU, SA, haya(i) , haya(meru) - early, fast, hasten

章  SHOU - chapter, badge, mark

障  SHOU, sawa(ru) - hinder, interfere, harm, hurt