「春天先生」角色於 2013 開始創作；認為⼈類為什麼演化到陸地上來，然後在陸地上活得殘喘存活，就像是活在陸地上的⿂，兩眼無神、嘴角唾液，時時刻刻的呆萌模樣。

The character "Mr. Spring" began development in 2013. It reflects on why humans evolved onto land, only to struggle for survival, barely hanging on—just like a fish living on land, with lifeless eyes, drooling at the mouth, and constantly wearing an adorably dazed expression.