Hayao Miyazaki, the retired/unretired animation legend who is indelibly associated with hand-drawn filmmaking, is directing his first computer animated film.

The ten-minute short, which will star a caterpillar named Boro and will be displayed at the Ghibli Museum, is expected to take Miyazaki three years to make, according to a report on Anime News Network. It is not clear what stage the film’s production is at, or how much longer it will take to finish it.

“[Hayao] gets bored when his goal is maintaining [the Ghibli Museum], so he needs things to fiddle around with,” his son Goro Miyazaki said at an event last month as explanation for why his 74-year-old father was making a CG film.