My thoughts: Sort of a tl;dr before the review.

Interesting story with great lovable characters. Drama isn't listed under a genre of the story, but the story has lite drama. The overall story is very lighthearted. The manga is in full color and characters look great, but background detail is sacrificed for this. A very enjoyable manga for all audiences. Pacing feels a little slow, but weekly chapters help to make the overall manga feel like it progresses a little faster. Romance is more developed later in the manga around chapter 60 and later.

Story[10/10] The story progresses somewhat slowly, but the amount of detail that it goes into is what really makes this manga. It's about a 27 year old NEET who gets a pill that lets makes his appearance go back to being 17 again, and it able to redo his Senior year in high school. It is not listed, but there is some light drama in this, and they romance is not quite prevalent until later in the manga, around chapter 60+ and later.

Art[9/10] The manga is in full color which is both good and bad. Giving color looks better and helps you to recognize characters, but the quality of the backgrounds is weak. That being said the characters still look great.
** One thing I have to say, is that the manga is not formatted in pages. Each chapter is read from the top of the page all the way to the bottom. This means if you read it in a page format (like a regular manga/book) the art may end up looking really weird from page to page where the art may have been cut off.

Characters[10/10] Most characters have had some great development so far in the manga. Only one of the main characters is still somewhat unknown. You will love every character. There are no characters that are unlikable, although some are somewhat generic such as one of the main characters being dense, but nowadays any story is going to have what we call "a somewhat generic character" but that will not stop you from loving them.

Enjoyment[10/10] I find this manga enjoyable for many reasons. The full color manga is very refreshing when you typically only see black and white. The story of a person who gets to redo their senior year in high school is very interesting, especially for those of us who wish we could go back to when we were young. Very likable well developed characters.

I will do my best to update as I continue to read. Hope this review helped to clear things up!