Seinen reader here. Actually, just about anything and everything can be a topic for a seinen magazine and I confirm that this is definitely published in a seinen digest. There has been a few mangas with BL undertones that exists in seinen stories tbh. And trap mangas are outright BL. It's not the first time that I've seen a topic something this random in seinen there's even that two husband-one wife thing LOL. Seinen can create the oddest slice of life stories out there.
Seinen reader here. Actually, just about anything and everything can be a topic for a seinen magazine and I confirm that this is definitely published in a seinen digest. There has been a few mangas with BL undertones that exists in seinen stories tbh. And trap mangas are outright BL.
It's not the first time that I've seen a topic something this random in seinen there's even that two husband-one wife thing LOL. Seinen can create the oddest slice of life stories out there.