Another time travel movie. Not like the other one, there's no parallel world in this movie, so when you change the past, which means you break the nature rule, you'll receive the punishment. In this movie, the hero going back and forth to the past using time travel machine, a kiddy watch (in my perception) It's a little bit absurd and funny for me, but after all it's okay. The hero will meet a girl named Kyoko, not a heroine, but I wonder what Kyoko did in the past that makes both of them meet.
Ah! I love the fireworks scene!