Japanese literature Four and-a-half-time machine blues

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Japanese Literature
Kadokawa Bunko / Random people modify "Yesterday". Survival of the world and fate of love? Time slip to yesterday in search of remote control of submerged air conditioner! However, bad friends change the past without permission and the world is on the verge of extinction. The collaboration of 『 THE TATAMI GALAXY 』 and 『 Summer Time Machine Blues 』 Miracle is realized!