Due to the effect of sak's core when he almost went insane from lima almost dying. Sak's ability was to target and eliminate the virus but his core's ability got altered in order to protect Lima. His core affected everything around them to be in extreme pain but had the side effect of healing Lima, including his old scars, and bringing him back from the brink of death. (=・ω・=)
Ohhh thats interesting. Thank you!
Sak's power healed lima entirely, including healing his scars
Spoiler
Where did lima's scars go???