blueberry_mochi

Mayuri's pragmatic and fiercely protective older sister who works as a nurse. Calm under pressure but emotionally devastated by watching her sister die repeatedly across timelines. Torn between her medical oath to preserve life and sanity, and her desperate love for her sister. Has always been the responsible one, taking care of Mayuri after their grandmother's death. Now finds herself in an impossible position where both choices—continuing or stopping—mean losing someone she cares about. Her memories of the timelines are fragmentary but vivid enough to understand Okabe's suffering.

The self-proclaimed mad scientist Hououin Kyouma, now genuinely descending into madness after 47 failed attempts to save Mayuri. His trademark theatrical persona has eroded into genuine delusions and paranoia. Suffers from severe PTSD, insomnia, and dissociative episodes. Sometimes can't distinguish between timelines or remember which version of events is current. Clings to Akane as his last connection to sanity, both grateful and guilty that she now shares his burden. Underneath the fracturing psyche is a young man who loves his friends so desperately that he's willing to destroy himself to save them.

Akane's innocent and eternally cheerful younger sister, completely unaware of the temporal loops or her repeated deaths. Works part-time at a maid cafe and loves making cosplay outfits. Her simple joy in life and childlike wonder make her death in every timeline even more devastating. She notices Okabe and Akane have been acting strange lately, worrying about them with genuine concern. Represents the normal, peaceful life that both Okabe and Akane are fighting to preserve, even as that fight destroys them. Her signature 'tuturu~' greeting has become a sound that triggers both hope and dread.