Emi Ibarazaki

Emi Ibarazaki is one of the paramours of Hisao Nakai and a dedicated runner/track sport enthusiast. Of all the students of Yamaku Academy, Emi is probably the most normal in terms powerlevel but she has the uncanny ability to outrun Death (easier than it seems but harder than you'd hope). Her circle of friends includes Rin and Hisao and presumably several track club members.

Background
Emi lost her legs and more importantly her father in a car accident some years before her arrival at Yamaku. This warped her viewpoint on how she views not only her life but her future and seeded some minor self destructive tenancies. After an arduous physical therapy, she was then able to continue her passion of running, which she picked up from her father (supposedly).

Yamaku Academy
The first smidgen of her recklessness is what brought Emi and Hisao together. Crashing into him and almost setting off a heart attack brought them both into each other's lives.

Several interactions and another almost heart attack later, Emi is more or less put in charge of Hisao's physical health, acting as a motivator for him to get out onto the track. Their respective conditions bring them close not only physically but emotionally to the point Hisao confesses and Emi leaps at the chance cause girl she thirsty. During their first consummation not long after, the Angel of Death himself makes kissing and slurping noises whenever he gets the chance to ruin Emi's love life.

On the track, Death has been trying to catch up to Emi for a long time but always just barely manages to not catch her before getting winded and giving up for the day (leading to his saboteur tactics). Which is a shame because soon after their relationship starts, she becomes wheelchair bound due to an infection of the leg. Emi's been running her stumps raw in her constant effort to take her mind off things affecting her. This causes some emotions to well up in the both of them as something is clearly affecting Emi and she refuses to talk about it to her now boyfriend. This comes to a head with Emi more or less telling Hisao that they are not going to be as close as Hisao probably wants, citing that anything can change in an instant so why bother.

During a visit to her home, Hisao meets Meiko, Emi's mother and the two hit it off and it was a generally pleasant until Mrs. Ibarazaki brings up the verboten topic of Emi's father. Depending on the Heartbreaker timeline, Hisao either pursues her to help and gets kidney kicked for his trouble or he lets sleeping dogs lie since Emi can handle herself and likely wants to cool off. Though with the latter path, Emi still bites his head off and forces Hisao out of her home because she can't trust her mother to not talk about it.

Back at school after the visit, Emi realizes she's being a dick, allows Hisao back into her emotional bubble, and has an emotional breakdown and catharsis. She, in a roundabout way, makes it up to Hisao by allowing him to accompany her to her father's grave and to witness her deep seated vulnerability surrounding the whole situation.

Aftermath
After the collapse of Heartbreaker's effect and the interweaving of the timelines, Emi continues to drag Hisao to the track to make sure he doesn't die from lack of cardiovascular health. Everyone is still on shaky ground considering what Hisao actually means to all of them, especially since all bad routes are canon still but they move forward in their lives with Hisao supporting them and vice versa. She was also retroactively kidney kicked by Dark Spirit Optimus Prime thanks to this though.

Hisao
Her recently acquired boyfriend of dubious survivability and moral character. She doesn't coddle him and expects him to be on the track every morning so she can whip his noodle ass into gear so he doesn't kill himself from sneezing too hard. Emi is really physical with him mostly because she lives very in the moment and that's the most in-the-moment/instant gratification thing one could do. But even after unloading a lot of the unhealthier aspects of that mindset, she still finds time to grind him into a lemon flavored paste.

Rin
Rin Tezuka one of Emi's other charges. She acts as her arms occasionally for sensitive acts and as her drug dealer which earns her many a suplexing and other wrestling moves from Optimus Prime. Rin and Emi are close and do lean on each other in their own little ways, often killing time during school and lunch with Emi being Rin's dedicated trip minder.

Abilities

 * Below Average Strength: Given her stature, Emi is incapable of lifting heavy objects in any useful manner. She is capable of locomoting via her wheelchair but that speaks to her overall fitness and muscle definition than overall lifting or combative force.
 * Peak Human Fitness: Her dedication to running and her unique ability to outrun Death has garnered her speed and stamina well above a normal human.
 * Average Durability: She's shown normal human durability and capability in shrugging off damage. Couldn't even tank a car crash. What a chump.
 * Average Intellect: She has the normal intelligence expected of a highschooler, it's just she'd rather be running than studying. As we all know, highschoolers have incredible foresight, ability to plan, knowledge retention, and awareness.

Speedforce
A rare instance of a non-reiryoku, stand, or chakra based ability among the population of Yamaku, Emi is capable of casually tapping into the Speedforce and uses it to not only clown on people at the track but to outrun Death itself since the Katawa-Doki universe lacks a Black Flash.