It was mislabeled. So when the new group translating the series released their version of Vol2 Ch1, it got uploaded and then removed. Mangago updated the labels to prevent it from happening again.
If you'd like to see the uncensored goodness of the NNN Scans version, you can read it here:
https://myreadingmanga.info/nobara-aiko-akiyama-kun-vol-02-eng/
or here:
https://drive.google.com/drive/folders/17uklQpVfiFy1nVwxpCuWh6j_kSaVhQGN
nooo I got a fake update. I was so happy, it was one of my first yoai, now I'm so sad ╥﹏╥