Rebirth in harry potter world with a system( you know what, there's someone out there really hates us make me wanna quit writing in English tho, but thx to who have supported me, but im sorry)

Fushi Hageshi was one of the samurai in the army from the Sengoku era 15th century, when he was fighting to protect the shogun he and others retainer have been ambush by the enemy, causing him to injured, but he still attracted the enemy's attention to follow him to avoid shogun being captured, but at the moment he was running away and he fell into a cave and fainted with the injury he suffered. He fell asleep for a long long time, but his youth as a 16-year-old samurai still been preserved like the way he is before. Until he wakes up by sudden earthquake waking him up from his slumber when he wakes from his long slumber, the armour he is wearing crumbling into dust, scattered blown by the wind, he can't find his katana, as he just coming out from the cave he has been trapped for hundreds of years, therefore he just feeling that he fainted for a week, but he didn't aware all of this, because in his mind he thought he fell asleep for a weeks only, until he comes out from the cave as the scenery is totally change, he is not in the Sengoku era anymore. He could see a giant iron with a wing fly in the sky, as he could see a carriage without a horse to pull it and the wheel is made in black colour. Follow Fushi in his journey at the modern world.