Samezoku e no Sasagemono (Sacrificed to the Shark Clan)

The plot follows Avel, the chief's son of the Tangata clan. To avoid conflict with the powerful Miyaru clan (who possess the blood of sharks), the Tangatas offer one adult as a yearly sacrifice. Avel prepares to be this offering. When a beast attacks him, he is saved by Tukiri from the Miyaru clan. However, when Tukiri realizes Avel is bleeding, his appearance transforms into an inhuman form and he goes into heat. The story explores their dynamic amidst a tribal premise where the Tangata people's gender roles are determined by their first sexual encounter.