About the kid, that's totally normal, Keiko is definitively more impactful in his life then a child that never came. Men don't bond the same way because they don't carry the children. The bond between father and child is something that happens after birth.
The loss of the baby is definitely less important to him than the lost of his girlfriend / ex-fiance.
ok, so I am not trying to be a jerk, and for sure the bonding of mother-child is definitely more intense than the bonding of a father-child before birth. that being said...
I am going to go on record here for the sake of all considerate/sensitive men everywhere and say that we do care!!! if my partner were to get pregnant that child's life would be just as, if not more important to me than the relationship (not the life of my partner, but the relationship) I would have with my partner. and if my partner were to miscarry, i would 1) be super worried about my partner's mental and physical health, BUT 2) i would also be upset that our child was lost (and its no one's fault, i would definitely not blame my partner, and i would try to be as considerate as possible in how we as a couple dealt with the miscarriage. i am just saying that it would not be something that i would relegate to the realm of "out of sight, out of mind")
once again, i just wanted to clear that up, at least for myself because i don't think that way (meaning what Evilnemesis said or how the guy in ch21 was acting). other than that i agree +/ follow most of the speculation/ideas that Evilnemesis put forward. so try not to get mad, just try to understand my viewpoint :P
Not a jerk at all, it's hard to understand exactly what someone is saying online. I'm not saying men are not able to understand, just the bond is stronger ( if I were saying that, I'd be saying that I can't either ).
There's still the possibility that he did not know she lost the baby before they went separate ways. Because he clearly said something like "I don't understand what happened and / or changed".
You'd have to be quite the dimwit to not understand why suddenly a woman would feel this way after such an experience.
I was actually quite shocked at first and that's why I theorized that it's possible he wasn't aware at the time of the break-up because someone can't be so insensitive ( in my mind ). Although, people have shown me otherwise in the past.
This could also be the typical Japanese salary man not understanding anything else aside work, work... and work.
But I'm going to give him the benefit of the doubt until proven otherwise.
Also, for those that think they're going to hook back up, are you nuts? There's just too much pain associated with that relatively quick ( shotgun marriage ) relationship. This might not be a yuri end, but there's no chance in hell that this relationship rekindle.