Onihime VS

Weak, bullied by his classmates and victim of heart problems requiring expensive care, Setsuna suffers above all from being only a financial abyss for his sister. As he is about to take the big leap to shorten this miserable life, a mysterious man offers him a pact: to trade his life for 10 million yen. Skeptical, the young man finally accepts. Kanna and Rana, two voluptuous and volcanic demons, then appear. In a year, one of them will have the privilege of devouring Setsuna's heart. Who will have the favor of the young man? And why does he now seem to attract demonic creatures?