[Main Stone Era] Love with a Science Student

I, a modern man, fell into the deep sea and slept for thousands of years because of a mission. I originally thought that when I woke up, I would be like Captain America next door, unable to accept all kinds of high-energy and high-tech products in this world, but unexpectedly... I returned to before liberation overnight. Not to mention the mobile phone network, there is no electricity. As an e-sports girl, I really want to die. If all human beings in this world have been petrified for thousands of years because of a green light, I pray that the green light will also come to me. "You are the flag of mankind! Cheer up!" My number one fan shouted passionately. "I never said I was your fan... Well, forget it, come here to work." I, Ai Er, am declining from a famous partner of justice to a tool of the onion scientist. 1. Main Stone Era, mixed FGO, I love Gudawuwuwu. 2. The male protagonist is determined. 3. The first part is survival in the wild, the second part is Assassin Unparalleled, and the emotional line is interspersed in the middle. Concept: Buddhist