Iroha, who had been living with her mother, gained a sister close in age named Rika due to her mother's remarriage. Iroha, who had been living with her father, got along well with the straightforward Rika. Iroha knew that Rika had been aware of her lesbianism since high school and had girlfriends and sex friends. Rika, who had been secretly targeting Iroha, finally...!
I Energy
