!! HEALERS !!

Cheon Haesun has been terminally sick with some type of disease that leaves his skin with purple blotches.

One day a dungeon overflows and monsters attack the bus he’s riding in. During this attack he’s awaked, but is still too weak to fight off the monster. That’s when a mysterious woman saves him and his sister, and helps train his new found powers.
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SO GOOD I LOVE THIS MANHWA

One day Kang Songhyun woke up confused in a cave with a dozen other people, nobody knowing what happened. Seems they were transported from Earth to an unfamiliar fantasy world with magic, a system also accompanying them.

Kang Songhyun becomes an unofficial healer due to his low magical power. But he’s special, able to heal injuries that normal magic power can’t.

Raymond, an unofficial child of the king had been an outcast his whole life. Determined to prove himself he becomes a healer. But due to having no talent in healing magic, he’s once again become a laughingstock. But one day he’s enlightened with modern day surgical knowledge, that this world does not have. With his knew found skills, he’s able to heal things other healers can’t.