Because In the description I clarified also I can’t disclose too much without giving spoilers, but it starts off looking like he’s the main love interest, but he’s not

It’s not pure yuri, there’s a harem, yuri and bxg along with gxg, its from the 3 females perspectives though, along with that the follow up books will be more so bxb and gxg due to other characters that will be introduced in this book.