The 4th guardian, Sasagawa Apple Jack, first time she is half American-Japan. But now she is Japanese. S.AJ always say the truth, never lie and easy to read. She is second-older sister in Sasagawa Family, and youngest sister is S.Apple Bloom.
Fun Fac: Sasagawa Timber Spruce and Sasagawa Gloriosa Daisy are same ages as S.AJ but S.AJ born first, then S.GD and S.TS.
S.AJ quite intimate with Rain Algobaleno: Pips Petals and respect him as "Master" (In this AU. Pips is male, I gender swap to manage relationship btw Pips and Zipp)