Ok, so, I admit that just reading that title gave me flashbacks to some serious garbage doujins. In fact, it seems like a really shitty trend in JP right now where the dad cucks the son and the ex gf/lover/this set up becomes his "mom". Ugh, anyway, that title plus the characters themselves set off some serious warning bells.
I'll give it about 10 chapters before I decide, but as @swain123 pointed out, there is another one like this. This obviously isn't bad so far, just seems a little too "forced" for my taste.
The amount of serious comments about NTR... Did you guys never roleplay with your girlfriends? This is a fetish manga but most importantly a wholesome romcom. It’s caters to a niche but not that niche.
@Yourself - It makes one wonder, doesn't it? How you can spot the very few mentioning it and completely miss the point of said comments. it's ironic, really that you took our comments about it more seriously than we did.