
well by the end do they not realize it's not their kid but decide to take responsibility? i think it's about perspective, clearly they are actually shit as it's pointed out many times, but at some points they try to stop each other from being complete assholes to the girl. i don't wanna say they redeemed themselves in the end bc they didn't but she seems happy with them and they seem to want her to be happy, i think by the long run they'll be better parents than the mom and possibly the nonchalant grandma

I get you, but I can also feel the irritation from the guys' perspective. You are struggling in your life and then suddenly you have to take care of your ex's child and you don't even know if you are the father or not.
I don't know about the West, but in Asia, It is very common for parents to fight and argue with each other in front of their children. They even say some awful stuff to their children too. That is how most of us grew up.
Idk of this is a hot take or not but ur warned I have a somewhat negative take:
This is cute and all but at the same time this is not an environment that a child should be raised in this is actually horrible for the kid everytime they fought infront of her about how much they don't want to be her dad a part of my soul ripped and I know they did it for their own reason especially touma but infront of her? That is not ok and at the end they settled with "we're not ur dad's but adult who will take care of you " like dam.... Is it that hard to be a dad? Blood does not matter like do it for the kid she needs a parent ....also I know all this is fictional and not in the slightest accurate cuz my girl is an adult in a kid body and she does not react like most children do but yeah I'm really passionate when it comes to children and I wanted to give my opinion but defo this manga is not bad by any means