Bog Standard Isekai - Chapter 40Book 3.

Wonderful wizards mix and match Western magic and Eastern mysticism, and become the most unexpected wizard or Taoist priest in the world.

Tom: Watch out Vijay, Tiger Tank!

Vijay: Shrink quickly, just missing a keychain, hehe…

Tom: The mummy is resurrected, run

Vijay: What are you panicking about? Come and get a corpse talisman, stop first, just squatted in the pit and forgot to bring toilet paper…

- Description from novelbuddy

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.

The empire has turned into the land of the undead due to a spell gone wrong. God summoned heroes from countless worlds to purify the empire and plant new hope. Lee Shin Woo, an ordinary earthling, was also summoned. As an undead, that is.

In the current era, people are either normal or are with ‘special abilities’. Cases related to the latter are managed by the “National Anomaly Prevention and Control and Special Species Management Office”.
Qi Zheng Emperor Sheng Lingyuan was reawakened a thousand years later after he jumped off the fiery Red Lake. Xuan Ji, a newly transferred staff to the Reparations Division of the Deviant Control Office, finds himself having to clean up the mess of a revived tyrannical monarch. The two seemed to share something from the past, but unbeknownst to them, a big conspiracy is stirring right underneath their noses that could destroy the balance of the world.

- Description from Novelupdates