This tag is only used if the main protagonist was transported into another world with the existing body & soul, part of a soul that reincarnated or just the part of a soul that inhabits someone's body to another world and came back from the place where the existing body & soul or part of a soul originally came from. The part of a soul that returned from another world may be reincarnated, inhabits an existing body, or came back from the original body of the main protagonist. There are no restriction for the place or world where they originally came from.
[You have entered the dungeon at Gwachun Station’s 1st Exit.] When former high school student Kang Woojin finds himself returned back to Earth after being forcibly summoned to a foreign planet for 20 years, he soon finds that Earth is not the same, normal place as he once remembered it to be. With his former strength and age reset back to zero, watch Kang Woojin as he gets back on the path to becoming the Earth’s strongest Necromancer!