It's called the Spirit of the World Tree in the other world. AlphaPolis

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

A modern Japanese male high school student, Ki, was involved in when his friend was summoned as a hero and moved into a different world. At first, he spent time as an ordinary person, but when he met with an owl that speaks human language, he remembered a memory that he had forgotten. The spirit of the tree was moved to a different world when he was a child, and became a spirit that lives in the world tree. Now, there are extraordinary changes occurring in the world tree, and disasters occur everywhere. In order to find out the cause of the extraordinary changes, the tree begins its journey to the world tree!