it's as the title says! the mc used to be rly op or had a high position power and something happens that leads to them living a new life.
NOTE: these stories can get really diverse with the genres~
following manhwa usually consist of: - reincarnation (optional) - mc was or used to be in a strong position of power or strong physically - mc is now living a different live but pursuing the same career path/goal but in a different method