Lord_Ox

Life on Earth was already a struggle for Jack, but waking up on a boiling-hot alien world is a whole new level of brutal. His only safe space is a tiny radius around a cooling shrine, surrounded by a wasteland where temperatures start at 60°C. To survive, build a base, and hold his ground, Jack chooses the [Lord of the Dead] class—using an army of skeletons to hold off monster waves and greedy rival survivors. It gets better: his [SSS-Rank talent, Infinite Enhancement], lets him permanently upgrade anything under his control. Weapons, walls, skills, and his undead army all get stronger without limit. Along with Aria, a surprisingly dramatic fairy companion, Jack is ready to tackle the heat, build an unbeatable fortress.

In the Blue Cloud World, rank decides everything. Adrian Grey should have known that better than anyone. After reincarnating into a future Earth filled with dungeons and monsters, he spent four years waiting for the system that promised him a second chance. Then the awakening crystal called him an F-rank.