Angel Beats! Spin-off!!: Tabisuru Tenshi-chan

Kanade Tachibana is a cute girl who is called "Angel-chan" at school. She travels all over the country in search of "someone." During her travels, while stopping by Kanagawa, she meets Yuri Nakamura, a lively and cheerful girl. People who look a lot like SSS members also appear while on the road!? Will she be able to find "a certain person...?"

(Source: Kadokawa, translated)