Tomb Raider King, Vol. 7 (manga)

Jooheon has successfully conquered the first two of the Seven Great Tombs. But when Pandora kidnaps Jaeha, he is forced to venture into the Tomb of Envy without his trusty sidekick! To make matters worse, he is ambushed by Seolah Lee, a capable teammate from his previous life who now works for a hostile organization. But as he braces for a tough fight, a mysterious relic of memory activates on its own, and it has a very unexpected effect on Seolah!