Vampires. That is the true form of Hideyoshi. Shinga is a world where non-human tribes of vampires and werewolves live. By chance it is discovered that Yuzuki blood has the ability to awaken the latent powers of Gegga Tribe members, much like the mysterious Himemiko who has vanished. While the ability of her blood makes Yuzuki valuable in a battle, it also has the potential to become a reason why she might become a target. Hideyoshi tells Yuzuki that he will protect her, but she has to marry him first.
They're monsters of unknown origin that've
been popping up all over the place recently.
إنّهم وحوش لا يعرف مصدرهم
Sie sind Monster unbekannter Herkunft,
Monstruos de origen desconocido
que han aparecido hace poco.
Monstruos de origen desconocido
que han aparecido hace poco.
Ce sont des monstres non identifiés
qui apparaissent çà et là…
Mostri dalla natura ignota che di recente 
compaiono un po' dappertutto...
Monstros de origem desconhecida
Это чудовища, чье
происхождение неизвестно,