Failing in his job hunting, Sanada Kyouichirou was hopeless in this society. When kyouichirou had thrown himself towards the bottom of a cliff. When he woke up his body had returned towards when he was in fifth grade of elementary school. He did not want to have any regrets in this life so he had decided on building up an harem in this second life. The elder sister that he admired, a senior and president of the student council at a school for rich young girls, a strong minded upper classman at school. The poison fang of Kyouichirou who had pretended to be a innocent child attacks those girls.
- Episode 1 - Mizuhara Natsumi the next door older sister ~Secret Volume~
- Episode 2: Mizuhara Natsumi
- Episode 3: Shijouin Satsuki
- Episode 4: Shijouin Satsuki
- Episode 5: Mizuhara Natsumi
- Episode 6 Shindou Tsubasa
- Episode 7 Shindou Tsubasa
- Episode 8: Shijouin Satsuki
- Episode 9: Shindou Tsubasa
- Episode 10: Shindou Tsubasa
- Episode 11: Mizuhara Natsumi
- Chapter 12 Shijouin Satsuki
- Chapter 13 Shindou Tsubasa
- Chapter 14: Mizuhara Natsumi
- Chapter 15: Shijouin Satsuki
- Chapter 16: Shindou Tsubasa
- Chapter 17: Sakazaki Kaede
- Chapter 18: Sakazaki Kaede