A Cave King's Road to Paradise: Climbing to the Top with My Almighty Mining Skills! Volume 2

Heale and Riena have confessed their feelings for each other, but life isn’t about to give them a break—they are interrupted by the arrival of a pirate ship! Orc pirates are the newest additions to Sheol’s community, but there’s friction between them and the goblins. Heale hopes to bridge the rift between the two races, but he understands that some things can’t be rushed. Instead, he focuses on what he can do—deciding the island’s next big construction project! Sheol has developed so much that all the residents can live a comfortable life, so Heale sets his sights on trade. But the most experienced sailors, the orcs, are reluctant to leave land—they’ve been traumatized by their encounter with a monster on the ocean. Furthermore, new discoveries underground and some increasingly powerful invaders throw a wrench into Heale’s plans. It’s an uphill battle, but Heale’s trusty comrades will support him every step of the way!

[From J-Novel Club]