Kanna and Rena's cousin, Hina acts somewhat antagonistically towards them after an incident from their childhood. She's small and petite. Occasionally seen smoking a long pipe, she can summon smoke familiars to act on her behalf. Hina is also an accomplished potions brewer.
Onihime VS
Weak, bullied and pessimistic about life, that's Setsuna Kashiwagi. On the verge of jumping off a bridge, a mysterious man appears behind him and offers the contract "10 million yen in exchange for your life in a year." Skeptical at first, he accepts. Waking up the next morning, thinking it was an dream, he notices 2 beautiful women sitting beside him, they are Kanna and Rena Kurohime, demon princesses here to claim his heart in a year.
