no, its not lol. they were just generic character tropes. meets a world defying beauty, give her an OP background, have her work for the mc or with the mc then rinse and repeat. They had no believable reason to be with him except for him being the MC. The author would constantly work his ass off to set up situations so that there can be some sort of tease and that would be it, then he would repeat this every arc. Girls clothes slightly ripping from eating something, now they're blushing and embarrassed etc etc, That's bad writing, not believable and was a cheap tactic used to keep the readers to stay. He was never intending for a harem but he wanted to tease that it was and that way the author tricks the harem lovers to stay and because the story doesn't have a harem tag and the MC kept saying he see's everyone as sisters/friends and only has Irina in his heart, this makes the harem haters stay lol.
The MC carried this story, the girls were just their to capture the harem readers attention.