reminds me of that one shot of the guy getting isekai'd but not getting anything cheat like and ending up just being a dishwasher due to barely learning the language along with being poor.
The mom is dumping the kid on the grandma. I get the need for not having stress and not having a bad rep with the other parents but I feel that this is a lot more common in japanese culture than anything else. If not more common than a lot more prominent.