Indicates this is the animated adaptation of the original manga source. Refers to the first episode of the series.

Indicates the source was a web-based streaming platform rather than a physical Blu-ray or DVD.

However, strange things begin to happen. Ojiisan starts to feel an unusual connection to the hole, and he finds himself returning to it repeatedly. As he approaches the hole, he begins to feel a sense of excitement and anticipation.

The character of the old man (ojisan) could be central, serving as a catalyst for the story's progression. His role might embody the wisdom and life experience that younger characters lack, or conversely, he could be a character through whom the audience views the world with a fresh perspective. The dynamics between him and other characters would be crucial in setting the tone for the series.

: This is a common genre classification for adult-oriented animated content.