MTL - A War Between Spies - Chapter 6 Metamorphosis

Jack transmigrated to a parallel world and locked on to a Judge System that provided rewards for punishing evil. Hence, an Adjudicator of Death who stood above the law was hence born.

It has been more than ten years since he was transported to another world. The protagonist Deris Fahrenheit, who has became a magician with special circumstances, was freely enjoying his life in this world. However, a girl appeared before him and asked him to make her his disciple. That girl seems to be a transported person――

It’s a story of him who becomes the girl’s teacher and trains her to achieve her revenge (?) in otherworld.

In this world, only if you are strong, can you protect the people you love.