I guess this is the power of manga. You can make something uncomfortable into something wholesome. I mean, who would be gullible enough to let his long past ex gf with a kid to live with him???
WTH people, their age aren't that far away. Plus, Latina is already adult by that time. Another thing to consider is the fact that the setting is not in our time. What are you complaining about the LN here at manga site.🙄