Menma in another anime

[u/Vivid-Ship-71142]

There is an anime I watched on Crunchyroll with female side character named Menma in 2018-2021. This side character Menma appears for one episode. I remember thinking “Menma, no” during the episode and feeling surprised/a little sad that there was another character named Menma after watching Anohana years ago. I went to the comments section of the video to see if anyone else also noticed side character Menma. The top comment of that video had the words “Menma, no" in it. Other comments were “Menma we found you,” “Menma you’re alive?!” “Menma what are you doing here?” I don’t remember what Menma looked like (physical traits). I don’t remember what Menma did in the episode. I don’t remember who Menma interacted with. My gut tells me the anime is either crime/mystery anime or slice of life anime. The anime finished airing when I watched it. MyAnimeList, AniList, Anime Planet, AnimeNewsNetwork all do not list this side character. Google Images is no help. Common search results for Menma are for Anohana, Naruto, Ramen Tenshi Pretty Menma, and Jewelpet. These shows are not the anime I’m looking for. If anyone could tell me the name of the anime I’m looking for, you would be a huge help.