A moon who stays in bed all day every day will soon become obese. A healthy moon needs movement and exercise to stay fit and not become obese. If a moon stays in bed all day, they’ll be sure to grow obese over time.
But once the moon gets obese enough, he turns into a super hero (ひ)! He is, super obese moon! The most obese hero in all of history.
Currently there are no similar looking kanji which exist in the WaniKani learning system