Basically collection of mcs who are tired with life, too strong to care, kinda suicidal sometimes, or turned batshit crazy due to multiple regressions/reincarnation.
You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
The Last Immortal's Theorem