Conclusion: There were two surges in the turn of the years from 2021 to 2022.
Related contents:
1. The following is the webpage I was talking about in this episode.
【必見！】あなたが本当に求める文字コラ集 / In English: A series of erotic collages (erotic collages: pictures with captions)
2. The video version of this episode: [Note 110] What happened in the turn of the years
