Episode 1
S1E1
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"A MYSTERIOUS MAN POP UP WHEN A CERTAIN GIRL IS IN TROUBLE"
Yurina, a mystified high school girl, casually downloaded a mysterious app. Since then, whenever Yurina is in trouble, a silent, mysterious old man servant appears and helps her! Adapted from the manga "Shimobee" (しもべえ) by Murata Hiroyuki (村田ひろゆき).