Haru ni Nattara: Koguma no Yuugo Monogatari

Overview

In the spring of 2020, Yugo's Grandmother travels from the countryside to finally spend some quality time with Yugo. The two see a "comedy show" in the park together and later that night, Yugo has a good time telling his family about his day out. However, the next day Covid-19 restrictions are put in place in town and Yugo is stuck at home. Then, he learns that his grandmother is not feeling well. At first, Yugo patiently waits at home for things to return to normal, but eventually he gets bored and silently slips out of the house… (Source: Official YouTube)

Source: AniList