The Regressor Wants To Die

A Never-ending Hell......
Lee Do-Yun never asked for much. But somehow he ended up with everything. The ability to Regress and Adapt to everything. With those he lived a life far longer than he wanted to.
And now even his last plan to end his life failed. Now back on a changed Earth that has stepped into the world of Monsters and Dungeons, he seeks a way to fulfill his wish again.
……
What to expect?
Powerful, carefree, and slightly insane MC, Check.
Tower Climbing, Check.
Gates, Check
Hidden Factions, Check.
Different Worlds, also Check.
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