Coicent

[1] This story takes place in 2710, when a boy named Shinichi follows a white deer and meets a strange girl.

It is licensed in North America by Sentai Filmworks, and was released alongside another Sunrise produced OVA Five Numbers!

[2] In 2710, a boy named Shinichi is on a school field trip to a rebuilt 21st century version of the city Nara.

When he wanders from his class, he spots a talking white deer and it steals his bag.

Shinichi follows the deer and sees a strange girl named Toto and falls in love with her.