They existed long before anyone can remember. They are simple and strange in nature, not resembling any other plant or animal in this world. In ancient times, people revered these bizarre creatures and called them "Mushi." 
 
People once again began to believe in the existence of these "Mushi" when they began affecting their lives in inexplicable ways. 
 
The one who connects the world of "Mushi" to the world of humans—they were called the "Mushi-shi." 
 
All life exists not to hinder others in this world. 
 
They are simply there to live as they were meant to. 
 
(Source: Aniplex of America)

Episode 1 - The Green Seat

Episode 2 - The Light of the Eyelid

Episode 3 - Tender Horns

Episode 4 - The Pillow Pathway

Episode 5 - The Traveling Swamp

Episode 6 - Those Who Inhale the Dew

Episode 7 - Raindrops and Rainbows

Episode 8 - Where Sea Meets Man

Episode 9 - The Heavy Seed

Episode 10 - The White Which Lives Within the Ink Stone

Episode 11 - The Sleeping Mountain

Episode 12 - One-Eyed Fish

Episode 13 - One-Night Bridge

Episode 14 - Inside the Cage

Episode 15 - Pretense of Spring

Episode 16 - Sunrise Serpent

Episode 17 - Pickers of Empty Cocoons

Episode 18 - Clothes that Embrace the Mountain

Episode 19 - String from the Sky

Episode 20 - A Sea of Writings

Episode 21 - Cotton Changeling

Episode 22 - Shrine in the Sea

Episode 23 - The Sound of Rust

Episode 24 - The Journey to the Field of Fire

Episode 25 - Eye of Fortune, Eye of Misfortune

Episode 26 - The Sound of Footsteps on the Grass

Artland

Kodansha

Aniplex

MUSHI-SHI The Next Passage