undefinedNora lives together in Sakuragabuchi with Shachi, a girl younger than him whom his mother had adopted. After his mother’s passing, they were able to grow up just fine with the support of those around them. Shachi loves Nora very much, and wakes up him every day while straddling him in bed. Then they head to school and enjoy their time with their friends, including their childhood friend and discipline committee head Michi, and his cheerful gyaru-like kouhai Yuuki.One day, Nora came upon a girl named Patricia in a park on his way to school. She was a Princess of the Underworld and she came to the world of the living on her mother’s orders to destroy everything and remind humans of death. However, the life energies were too strong for her and she was overwhelmed by it. Nora took care of her while she was feeling ill, and she fell in love with him as a result. She asked him to explain the ‘mysteries of life’, but why does that include reading porn books...!?
undefinedOne hot, midsummer's day, Shun Nanami's sister drowned to death. It's a memory he will never forget, which has become lodged forevermore in his heart. He decides from then on to live in her stead, to make up for the life she never got to lead.Time passes, his agonizing childhood behind him, and he currently spends his days attending school like always. Then, another sultry summer comes around, reminding him ever-so-slightly of his sister once again...Just then, he hears a piano's melody far off in the distance--a tune she always adored. He follows this music to its source, only to find his sister standing there."Please take care of me from now on, Onii-chan."His little sister passed away long ago, but now, an android who looks exactly like her has appeared before him, "TRINO."