This is one of my first BLs so I can't comment much on it as a BL, but the storyline is not the most creative, the usual high school setting. However, I did like the style of acting in Aoki (exaggerated expressions) as I thought it was quite cute. I love love love the ending song, 'Secret Touch' by Snow Man. There wasn't any particularly impressive acting throughout the series but it was passable imo, lines are not as forced as some of the BLs I've watched. I just wish that it was a little longer so they could maybe get into the backstories of the characters a little more (family etc.)

All in all, Kieta Hatsukoi is a relatively lighthearted and cute drama that I would watch again just to squeal at the sweet romance:)