This one works on you quietly, the way a single-episode OVA from 1992 can when nobody is trying to sell you a franchise. Kanta finds an orphaned fawn, names him Poyu, and the whole thing hinges on one detail you cannot stop looking at: that golden tail, which is exactly the thing that makes hunters want him. There is no spectacle here, no power-ups, just a boy deciding he is going to stand between a deer herd and the people with rifles. It comes from a Daisaku Ikeda children's novel, and it carries that weight honestly, an actual history of sika deer being hunted out told at a child's eye level instead of a lecture's. Slept on doesn't cover it, almost nobody has seen it. Watch it for the moment a kid realizes protecting something is a choice you have to keep making.

Kanta is a lonely boy who saves an orphaned baby sika deer and gives it the name Poyu. One thing sets Poyu apart from other deer: his tail is golden. When hunters set their sights on Poyu, Kanta resolves to defend his friend and the rest of the deer. Based on a children's novel by Daisaku Ikeda, this single-episode adventure drama pairs the bond between children and sika deer with the sorrowful story of how people overhunted the species.