Short story, but it is still beautiful. I especially liked the part with their father's youthful love (hehe?) and I like exotic bl and shounen ai mangas overall, so it was a really good read for me. I don't know if yall might find it shallow, but what do yall expect from a fricking PREHISTORIC (???) Bl manga, lol. Surely you are not expecting a Achilles and Patroclus (tsoa) kinda love, yeah? Even then, I don't think it was that shallow, yk? Give it at least a try if you like exotic trope ;) have a nice day.