When a drama touches my heart and makes it flutter for its protagonists this much, I'm not able to stay too objective about it. This time in particular, I had very low expectations and was ready to feel bored while watching, yet my opinion was turned upside-down by the end of the first episode.
The relationship between Amagi and Takara is sweet and quiet, and the drama focuses on how the feelings they have for each other slowly change and adapt to their day-to-day life as boyfriends. At the beginning of the story they just like each other from a distance, and they even seem okay with just watching each other from afar and not getting involved with each other more than the bare minimum - even the confession and their decision to start dating seem to happen because of a lucky slip of the tongue. They're not used to express their feelings or even communicate properly with a romantic partner, and they're not even used to being loved like that either. Include the fact that they're both teenagers and you're bound to obtain a story with multiple trial and errors, misunderstandings, and clumsiness when it comes to a romantic relationship. The personalities of both characters were portrayed clearly and I believe that the acting was quite good as well; even though I usually hate misunderstandings and miscommunication in any kind of story, this time it didn't feel annoying at all, because it had a point.
I also really like how Japanese dramas in particular tend to leave a lot of room for introspection and inner thoughts. There's a lot of that in T&A and I loved it.
There is a couple of secondary characters that stood out more than the others, but there was no room for them other than to function as support for relationship advice or devices to stir up things, so I don't have much to say about them.

If you don't like slow dramas and you're looking for an exciting story, this is probably not for you. Other than that, all I can say is that this became one of my favorite BLs.