If you loved Jam Films, try Egg
Eine Brücke zwischen einem Film, den du schon gesehen hast, und einem, den kaum jemand kennt. Das teilen sie, und was der zweite macht, was der erste nicht macht.
Was sie teilen
Both films are directed by Yukihiko Tsutsumi, and they both carry the 3am cult mood tag, and they sit in Comedy / Drama / Fantasy territory. If that's the register that drew you to Jam Films, the second film will land in a comparable space — through a different lens.
3am cult
What Egg is
Morning train ride, fluorescent hum. Between blinks a golf-ball-size egg appears. Hatch and glare—each eyelid snap births something worse. Egg.
Ask 
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Claude
Grok
Le Chat
Perplexity
for a deeper bridge
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