Warm steel and cold hands
Hajime believes there are truly very few things in life that can surprise him anymore. As usual, Komaeda is one of them.
Or: Nagito locks himself in a cage, and Hajime finds out he has some deep, forgotten kinks. He is as determined to try and ignore them as he is to help Komaeda. With an internally screaming Hajime and a pining Nagito, shenanigans ensue.
(This is a longer, slow burn canon-compliant post dr3 piece, with a generally fluffy, comforting take on komahina & the cast living on the island. There's pining, a lot of pining. Plot happens. A lot of things happen, actually. Oh, and bdsm. That too :) )