Shikkoku no Sharnoth/Heartwarming

• When M shows remorse for the first and last time, deciding to fulfill Moran's wish.

M: Forgive me, Moran.

• Despite how much Mary made it clear she absolutely hated M, in the final chapter she realizes how lonely he has been, and chooses to save him.:

Mary, to M: Even if you don't want to, I won't let go. "Wait and hope", that's what you told me. Now I'm saying it to you. No matter who you are, or what pushed you into despair.