If you're looking for manga similar to Tomorrow's Leaves, you might like these titles.
Meet PET! PET (which stands for polyethylene terephthalate, a type of plastic) was a simple plastic bottle until nine-year-old Noboru Yamada recycled him. Now PET's a SUPER ROBOT programmed to protect Noboru at all costs! Whenever Noboru's in trouble, PET transforms, plugs in, and jets to the rescue! Unfortunately, PET's "help" usually does more harm than good, proving time and again that just because you call yourself "super" doesn't mean you have a clue.
A baseball team comprised of futuristic robot cats and a human make their way towards becoming a great team.
Rani cut off her wings to save Pixie Hollow and her fairy friends, but a fairy who can’t fly is unheard of. After a disastrous accident at the Fairy Dance, she runs away to try and find her own place to belong. Maybe the mermaid lagoon could be her new home…
Yuu Shirogane is a hot blooded school boy who competitively plays the Nintendo DS game Pokemon Platinum in order to become the Battle King.
Tinker Bell is the best tinkerer in all of Pixie Hollow. She's even asked to fix Queen Lee's bath tub, the biggest honor for any tinker fairy! But when Tink loses her magical hammer in Peter Pan's secret hideout, she loses her ability to tinker! Will Tink be able to get her hammer and her talent back without being caught by Peter Pan and the Lost Boys?