1539. Why will these characters have you seeing red? 紅 丹 赦 嚇 朱

Answer:

They are all related to the colour red 赤 - SEKI, SHAKU, aka(i).

紅  KOU, KU, kurenai, beni - deep red

丹  TAN - red

赦  SHA - forgive

嚇  KAKU - threat 

朱  SHU - scarlet