I'm Scattering IQ to the Protagonist - Chapter 149

Mortimer Zhu is an extremely unfortunate high school student who accidentally enrolls into an academy of a dubious nature, where it is the norm to jump in front of moving trains, get dismembered during orientation, and crushed by vindictive bouncing classrooms. Can he stay alive or will he die from the rigors of school? Why have evil spirits suddenly acquired a taste for his flesh?

- Description from Novelupdates

Mochizuki Touya, a 15-year-old boy, who got zapped by a flash of lightning due to a freak accident caused by God, wakes up and finds himself face-to-face with God.

The end of the beginning marks the beginning of a new era. Gods and demons were buried in the past, their history had crumbled into dust. As of now, twelve scriptures were passed down.

With the passage of time, during an excavation, a mysterious scroll of star map was unearthed at Egypt. As if carrying its mission, it abruptly appeared, yet abruptly disappeared. During its disappearance, a youth was brought along with it…

- Description from Novelupdates

I finally managed to kill the demon lord.