Shin Izayoi, on the outside, he is seen as an ordinary high school student. But in the inside, his actually a genius who likes made tools that surpass world technologies in secret, because of his imagination. From railgun, nanotechs, laser sword, mini gun, and a laser cannon.
On one fateful day, when he was experimenting his new creation, some unknown virus malfunctioned the whole system as he sucked into a strange wormhole and arrived at a strange world where every otaku's dream to be, but he didn't dream of it at all. So he accept reality anyway.
Attention: These story doesn't belong to me, the author belongs to Zeth435, I didn't get his permission but I message him. I don't know if he seen my message, but once you read this, it'll have small changes if you already read the novel.