2845. This #kanjipuzzle is about evolution. Start with one character, add a few strokes, and get another, then repeat. 一 + ? + ? + ? + ? + 腐

一 + 十 + 寸 + 付 + 府 + 腐

一 ICHI, ITSU, hito(tsu) - one

十 JUU, tou, to - ten

寸 SUN - unit of length

付 FU , tsu(ku) - attach, belong

府 FU - storehouse, government office

腐 FU, kusa(ru), kusu(reru), kusa(rasu) - rotten, rot, go bad, spoil, corrode