I'll be honest... and it will be a bit long...the story is good... the harem... irks me. He himself is not interested in anyone... but from the 4 interested in him... 2 are his students, 1 has the body of a child and the soul of his former fiancee and the last is the og fiancee of his body... so yeah... yikes...
Their identities are important for the plot overall so they matter apart of being interested in him.. which is kind of a plus... but it annoys me how much pov we get on them when ai want to read more about mc. Makes it feel like half the story is about the harem even if it's not.
Lastly... I can get over 2 teens being interested in him... like he is young, handsome, talented, rich and did I mention handsome? And it ain't exactly unheard of teens having a crush on teachers... it helps that it ain't mutual... but boy... those 2 girls are annoying... the white/silver haired one is especially insufferable... personally I see no reason for those 2 to be female and "love interests" at all... the other 2 have a reason for that... but the plot wouldn't be much different if they were just 2 male students important to the plot... ngl I kinda skim it when the girls appear... but it's still better than those isekai harem when the women are there just for ego boost and fanservice...

Should I give this a try? The 'harem' tag is putting me off.