Utagebros......

>>531886990
>from Higashi
>has an unknown race, special power and mysterious blade
>asks you to go to Karaoke in her trust tap so already linked
>color scheme matches her jacket buttons
>devs like her and she's one of the few 4*s to get multiple skins
All the boxes line up perfectly. She even appeared in an earlier summer event so she fits that pattern too if you believe in that one.