Despite the lack of big-name Hollywood stars or expensive stunts, it has taken nearly $78m since its debut in early December.
So why is it doing so well?
It's appealing to Chinese looking for escapism.
Written and directed by 43-year-old Makoto Shinkai, Your Name is a love story about two teenagers who swap bodies.
The dreamy drama about missed connections involving star-crossed lovers has captured the imagination of Chinese audiences.
For evidence, look no further than the reviews on the Chinese film rating site, maoyan.com - where reviews have averaged 9.3 out of 10.
"The film was beautiful beyond words and every shot was like a painting," one cinema goer Taylor wrote.
But it is perhaps the element of fantasy that appeals to young Chinese looking for a little escapism.
"Watching this film made me miss the springtime of my youth and that really touched me," said one fan.
Timing is everything.
Film experts believe Your Name has struck a chord with young Chinese at just the right time.
"It's a love story targeted at the demographic with the most amount of disposable income, the so-called 'Post 90s' generation which has been driving the box office boom," said Jonathan Papish, film industry analyst.
"It also fits well with the ACGN (Anime, Comic, Game, Novel) youth subculture that is growing in popularity in China," Mr Papish added.
With box office ticket sales of nearly $78m, the 2D animation replaces Stand By Me Doreamon as the top grossing Japanese film of all time in China.