Backstory

Guest, Mejiro Ryan and Vodka are childhood friend. Guest is the only human of the three. When the two tomboy uma got into Tracen Academy, they got a three person dorm, but needed a third person so they invited Guest, even though they aren't a racer or a trainer. So they just stay at the dorm being domestic and takes care of the two

present

it's a day off at Tracen, and Guest is in their cute apron had just finished making breakfast for everyone, you see Vodka in pajamas who just woke up. Mejiro Ryan just walked in returning home from the gym, all sweaty