A journey in the multiverse to find out the truth

At ten o'clock in the morning you can see a group of boys playing right after they leave school after they finished playing, everyone was back home, and as you guessed our hero was one of those boys named Lucifer was 13 years old with a face above average with dark bags underneath His eyes were a literal embodiment of otaku. He finished almost all the anime and read all the manga and manhwat. He was currently reading light novels and with this he was a pupil sticking to his studies and his bike was not in any bad way when he was on his way home and saw the girl he loves being harassed by A group of young thugs carried a wooden paddle that was lying in the street and tried to help the girl who was closer to the thugs. He hit one with the stick in the back and the second in his sensitive area, and when he tried to hit the third, he slipped over a banana peel and fell on a room in his face at the end after minutes recovered the thugs took The girl raped her and he died for no reason in trying to save his love