Akanesasu Shoujo: 4-koma Parallel

A 4-koma comedy spin-off of the Akanesasu Shoujo anime series—a story about a group of high school girls going on adventures in parallel worlds where they meet different versions of themselves. This web comic portrays daily lives of Asuka Tsuchimiya and Radio Research Society members that we don't get to see much in the anime.

(Source: Kadokawa, translated)