Yesss, it is worth it. The 1st couple i.e. the one the mc is in, is super cute and there's no need to worry over it. The second couple is a bit toxic and almost a bit codependent? so I suppose if that's smth that bothers u, u could skip it since even wo the "side" couple chapters u can still understand what's going on. The 3rd couple is also super sweet and probably my favourite. The last relationship we see as of now, which is not a couple, is probably the one u see concerning comments abt. Aoyama is basically groomed into an S relationship w a much older student that then abandons her, but the manga focuses more on the character overcoming this and she eventually cuts off the groomer, so it's not one of those concerning age gap relationships. Srry for the long reply btw, I just wanted to do a quick break down of the main relationships since u said u were scared to read it. I want to add the translator is super good and their tl notes r super useful so it's also not a story w confusing tl.
Also, I don't think the manga is complete rn.
My humble thank you for explaining this (*＾3＾)/～♡
Is this worth it? I kinda feel scared to read this cause of some of the comments. And Is this close to completion? Or complete as i am seeing "Side story" in chap 18.5?