If you're looking for manga similar to I Love Picnic, you might like these titles.
The story follows Marlin, a clown fish, who is highly overprotective of his son, Nemo. When Nemo gets caught by a diver and ends up in a dentist’s fish tank, Marlin stops at nothing to find him and gets a little help along the way from a blue tang named Dory.
Tarepanda lives a happy and carefree life, but sometimes he needs to get out and go on a grand adventure. Rolling his way around the streets and down stairwells, Tarepanda finds himself in a variety of fun and interesting situations. Whether it's breaking bread with construction workers, lounging on a park bench, riding the train or becoming the subject of a painting, Tarepanda always manages to have a good time!
A little girl named Yomigi-chan shares an apartment with her panda friend, Daifuku.