There are five protagonists,
She is innocent, lively, cheerful, considerate of others, and sometimes a bit introverted;
He is not handsome in appearance, and even a little ugly, but he is carefree.
She is proud, doesn't care about others, and is very squeamish
He, with his small eyes, attracted many girls, but within one year, DISAPPEAR
She is introverted, but she has a crush on someone she shouldn't love
But I am her (them)'s best friend, and I see the connection between her (them) very clearly.