I recommend Gunsmith Cats and Riding Beam to everyone.
Gunsmith Cats is in HD on YouTube and is only 3 episodes.
Riding Bean is too and it's only 40 minutes.
The guy who made both also has a really wholesome story: He was a manga artist when he was younger and made some of my favorite series, however, he inherited his family's candy business (a few hundred years old) and so gave up making manga to run the store.
He still draws though and uses his artistic skills to make original characters to help advertise the store (and even puts them on the packaging). If I'm not wrong, he also doesn't mind talking about his work in manga.
It's genuinely wholesome and I want to visit his store soon.