Mistress Of The Evil Forest - Case 41: Joint practical class: Deathblow.

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

Nagasawa crossed to Naruto Universe and was bound to Konohagakure.

If Konoha is severely damaged and destroyed, Nagasawa’s lifespan will be reduced.

He panicked at the thought of the upcoming Nine-Tailed Demon Fox’s attack , and the thought of Konoha getting destroyed left him in despair.

Fortunately, while bound to Konoha, he can obtain templates of powerful characters.

At the beginning, He got the Whitebeard template! Since it’s the Whitebeard from the Summit War of Marineford, he can use Tremor-Tremor Fruit’s ability and Haki.

Facing the Tailed Beast Ball, which terrorized Konoha Shinobi, Nagasawa leaped and shattered the Tailed Beast Ball with one punch!

- Description from Novelupdates

On the day of her escape from prison, she had died unexpectedly and was reborn into the body of Madam Huo.

When the MOBA character template crossed into the MMORPG [foreign land] world, Mo Cheng felt that there was something wrong with the painting style of this world.

“Thinking of the king of dragon descendants with four wings and three heads, he flew into and out of Qingming with four wings, but was torn apart by me.”

“The demon king who rolled up the eternal night and devoured the light, killed with a sharp blade, and created spirits with power, was also bombarded by me with the supreme holy light.”

The giant dragon roared, the mountains and rivers shook, and the earth mourned. The holy light shines, expels darkness, and purifies the world.

Shadows, darkness, and villains trembled in front of Mo Cheng.

“Now, face me!”

“Face, justice!”

- Description from novelbuddy