Xu Jianing (sufferer) and Xia Wen (attacker) met when Xia Wen's parents visited Xu Jianing's parents when they were 5 years old. And these two childhood sweethearts have a secret that they dare not tell each other - "Xu Jianing/Xia Wen likes this childhood sweetheart Xia Wen/Xu Jianing who is three months younger than me/who is three months older than me."
(There are only prototypes of the dog Muggle raised in Xu Jianing's family and the cat Twist that appeared in the later period. They are the cats and dogs I raised. There are no prototypes. I just wrote casually. Don't scold me ヽ(≧Д≦)ノ. Anyway, if you scold me, I can't blame the fact that I am a scumbag in writing.)
Intention: Just write casually and don't expect too much