It's plainly stupid to defend this manga unless the story can somehow justify whatever the fuck she did. As for now, you're really gonna let in a parasite that left you and had another man's child?
Here's the catch, it may seem wholesome, but that's the one sided perspective of this manga. Even to a man and woman having an affair, it will be romantic and wholesome in their eyes. You can watch a nice and cute couple in the train carriage sitting across from you, but you don't know that the other may actually have another partner that he/she is cheating on. You could see a very helpful and kind man, but on his own side that you don't see, he has murdered a few people.
There's many irl scenarios that you can use as an analogy for these type of stories. All hidden under the pretense that "it's actually a wholesome story so far." Is the law going to say, "this man has been a wholesome member of society for the recent years, so his murder of some people a decade ago shall be forgiven"?
Idk whom are dissing whom in this comment section, all I know is that the ones not defending it, definitely are not incels and more of a sensible member of society. Maybe learn the real meaning of the word, or maybe the defenders are the ones actually closer to being incels if they're easily tricked by a "wholsome story" glossing over the elephant in the room. That just show how much you're desperate for a woman.