Toki wo Kakeru Shoujo, Uchiage Hanabi, Shita kara Miru ka? Yoko kara Miru ka? Recommendations
The main characters have to fix major problems in their lives using a macguffin that allows time travel.
Both have above average animation but The Girl Who Leapt Through Time beats Fireworks in that department by far.
Similar plot, dramatic relationship between both hero and heroine..
both have stunning graphic and beautiful scenery
The storyline and the argument is more or less the same: young person suddenly can travel in time and mess up heavily. 'Toki wo..' feels a bit more fresh even being older and has better characters, but 'Uchiage Hanabi..' can be a good anime to watch if you need more of this. Also art is wonderful.
Similar plot device for time travel, small little sphere object, both have stunning visuals, although the art seems more original for toki wo kakeru shoujo because Uchiage Hanabi, Shita kara Miru ka? Yoko kara Miru ka? is super similar to the monogatari series, even for the studio being the same, the main characters are almost the exact same of the monogatari series.
The Girl Who Leapt Through time did much better at executing the time travel and romance aspect, the romance between Nazuna and Norimichi basically consists of them falling in love in literally 1 day, and the romance between makoto and chiaki is very wholesome,