Summer Time Machine Blues , Sam taimumashin bursu? is a 2005 Japanese film directed by Katsuyuki Motohiro. The film stars Eita as a member of a university sciencefiction club, and Juri Ueno and Yoko Maki as part of the neighboring photography club.
Komoto finds Niimi at the bathhouse and in a twist it is revealed that Niimi himself took the shampoo. With the remote missing Tamura goes into his future to retrieve the futures remote so that the past wont be altered. Everyone gets on the time machine but the machine is too small and Komoto gets knocked off. Komoto deceives the past club members who mistakenly believe that he has a girlfriend due to a voice message Komoto sent to the present Soga which past Soga received. Komoto distracts the club members but before he can leave his past self enters the club room. With no other options Komoto hides in the club room locker. The present club members return and notice that Komoto is not with them, but Komoto is already in the present having spent the whole day in the locker. A dog digs up a remote which is revealed to have survived for 99 years in mud and the remote still works. Tamura returns to his present but forgets his camera. When he returns for it he says that it belonged to his mother and Komoto and Ito note that Haruka also possess a similar camera. When they met, Tamura notes that his mother also attended this college. Komoto and Ito deduce that Tamura is the son of future Haruka.Professor Kohtaro Hozumi is inspired by these events to build a time machine which might explain the time machines origins since Tamura and his club members also did not know the machines origins. ........
Source: Wikipedia