Син-тян: Суперпространство! Моя невеста вызвала переполох

From a bleak future, Shinnosuke Nohara sends a girl named Tamiko on a mission to bring his five-year-old self to that time period right before being captured. Reaching the past, she claims to be Shin-chan's bride and takes him and his friends on a wild adventure to try to save the world to come. (Source: Anime News Network)