"Don't judge a book by its cover" is a metaphorical phrase that represents Aharen- San's perfect. Let me explain: In the trailer of the anime we are shown things that were popular back in 2017-2018 (When the manga's first Issue appeared) like Fidget Spinners and Fornite dances, so things that were popular back in 2017-2018 are now shown in a 2022 Adaptation... at first, I thought that was not the best idea, but now watching the first 4 episodes I can say that this anime is worth watching!
Being an introvert (kinda) myself I love watching things that I can relate to, so this anime was kinda calling me out to watch it because both of the main characters are introverts, even if I had to witness Fornite dances in an anime, but it was just one segment, now I'm fine, thanks for asking!
Also, I think it is worth mentioning that everything in this anime is simple (Story, Characters, Humor)... btw I recommend not to watch it if you expect a masterpiece because it is not. Aharen-San is just an anime you can watch after a hard day to forget about your daily problems and put a smile on your face before going to sleep.
Sometimes when I feel down I find myself watching random clips from this anime on Youtube, a thing that rarely happened to me before.