Unable to gain Rem's trust after waking in a strange foreign land, Subaru is forced to reconsider what it truly means to be a 'hero'. [SPOILERS] - The story assumes that you are up to date with the webnovel, at least Arc 8 Chapter 10.
On his second attempt to save Kurisu Makise, Okabe enacts a dangerous third option that catapults worldline divergence to a cataclysmic 37%. This is as a 'what-if' story scenario, an alternate timeline branch. Contains spoilers for Steins;Gate.