Rentarou Aijou finally mustered the courage to profess his love to the girl he adored, but his confession was met with rejection, making it his hundredth in a row. Having endured incessant heartbreak, he turned to a matchmaking shrine and appealed to the gods for a girlfriend as he starts high school. His prayer was answered by the god of the shrine, who pledged that Rentarou would find a hundred soulmates in high school.
Initially hesitant, Rentarou soon realized the truth behind the deity's claim when two of his soulmates, Hakari Hanazono and Karane Inda, confessed to him on the same day they met. However, there was a crucial omission in the divine promise: the death of any of his soulmates who did not enter into a relationship with him. Trapped in a perilous situation, Rentarou resolved to date all of his soulmates.
With a boundless heart to embrace a hundred girlfriends, Rentarou embarked on an unexpectedly exciting high school life, with his family of lovers expanding indefinitely.
