This is a stuffed animal from "Kon'na Ko Iru Kana"! The character is Pikatto♪ It's a toy that changes color when put in the bath, but it's about 35 years old, so it's unclear if it still works. There are tears and stains like in photos 3 to 5, so it's a rare item, but I'd like to sell it at a low price to someone who understands its condition.