I Had a Dream of That Girl

The Other Side of Jealousy (Sei Shiraishi) (1x8)

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Shiraishi is talented, admired, and successful—but finds life dull because everything comes too easily. One day, she spots Yamazato from General Affairs scribbling jealous rants in a notebook, using envy as fuel to push himself. Fascinated by his passion, Shiraishi asks to become his student. Thus begins their strange mentor-apprentice bond and daily “jealousy training.”