My only regret so far is starting this series when it had only 152 chapters. MC is a likeable guy that was known for being caring and considerate before the transfer so several girls in his class had already placed him in their sights. But the truly likeable characters so far are the girls of the series. The author decided on a range of complimenting character types and had them unified under his childhood friend.

His childhood friend wants to be liked by the MC to an extreme degree, so much... more>> that she didn't want to have monopolizing him strain what would become a necessary survival group dynamic and advocated for a harem from the start. Her compromise with the other girls on sharing him is that she must experience all of his first s*x acts before they'll be allowed to do it and all of the girls are actively sharing their experiences with each other as coaching. <<less