Albus Severus Potter got four fish, each with its own characteristics. He kept them in a fish tank. Because these four fish were so interesting, he decided to write a fish keeping diary.
Although the content of the diary sometimes goes beyond fish farming.
... What he didn't know was that at 12 midnight on September 1st, the Big Four of Hogwarts were resurrected.
——As 4 fish with different characteristics.
[Note: It mainly describes the happy daily life of the Sun generation, it is plain and warm, there is no plot at all, so proceed with caution]