The protagonist reincarnates into another world, but is born together with a twin little sister, taking advantage of the knowledge from his previous life to grow up. At first unable to speak a word, the protatonist desperately studies while perservering! Confronted with a little sister who is a beautiful genius, he vigourously grew up. But if it escalates any further to a love towards big brother♪
….. really, can he guide his little sister in the right direction? Fighting against that situation carefully from 0 years old… it was already long past to be careful.
By the way big brother, have you also grown up in a strange way too?
0. The Sleepy Angels
1. I think, therefore I am
2. Holy Mother’s Boobs
3. Thrusting out a fist to the sky
4. Reward for Cleaning
5. Training Together
6. Hell & Heaven