**卒業** – *sotsugyō*. Literally means graduate but it’s more an euphemism for **leaving a group**, **quitting a project**, or **doing something for the last time**, often with a sense of finality as if there’s no going back (at least in the near future). It’s an amicable expression because these “graduations” are celebrated with a send-off and a good word from both parties, though you might also just see this used colloquially to mean that they’re “finally done doing that thing” without much sentimentality or to soften the blow.
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Examples:
**Kana Motomiya** stepping down from the role of *Fennec* in *Kemono Friends* and *Doubutsu Biscuits*. Disbanding groups (Wake Up, Girls!, Milky Holmes, DearDream, every!❤️ing!, etc.) at their final year performing at an annual event. Official cast turnovers in stage shows (Revue Starlight). A personality or assistant personality doing their final show.