Review Detail of yorumaka in Crocodiles hero academia. {complete}

so i read till chapter 23 and i am not a harem fan, actually hate them so i will be dropping this i would liketo ask the author to put the harem tag on this story but what frustrates me the most is how it wasn't a harem at the beginning, like FL was the whole time jealouse when other women got interested in the MC and MC seemed quiet content with only having the FL but all of a sudden FL wasn't enough? and she was even fine and supportive to an open relationship? like it came out of nowhere the beginning was awesome though i really liked it