Aliasing amami_yukino -> amagai_yukino.
Reason: On the Angel Beats website profile
天海雪乃（あまがい・ゆきの）
I was checking on the artist's website to see if a reading was listed there, but don't think there's anything there. Doing some Google searches seems to back up the "Amagai" reading. Haven't found any site using the yomigana for "Amami" on this artist.
Updated by jxh2154