Read manga: Sentaku No Toki

manga
Artists: Gunchi Kiri
Status: ongoing
Latest chapter: Chapter 4
Updated at: Feb 15, 2021
Summary:

During summer break, a junior high school student Mitsuharu collides with an unusual creature while speeding on his bicycle. That unusual creature was a genderless alien called Toki who came to Earth for a "purpose". An unpredictable story about a lonely human and an alien starts!