Put it at the boundary between present and past, just before the earlier scene begins, then let that scene play uninterrupted. Pair it with Re:Zero Return by Death when a character is pulled back to an earlier moment, and end a cliffhanger flashback with JoJo To Be Continued for a familiar anime close.
O tym dźwięku
This three-second bell chime rings clear and shimmers as it fades, marking a sudden shift into memory. It feels distant, wistful and dreamlike, like a past moment surfacing quietly beneath the present. The cue comes from Akira, Katsuhiro Otomo's landmark 1988 anime film, where such a tone signals a flashback without words.