Kimi ga Shinu Natsu ni 19 and 20
19: Chase After Fukumen's True Identity; 20: I Want a Flower On the Stage
Mangaka: Idumi Minami
Description: By chance, ordinary salaryman Hiyoshi ends up becoming drinking buddy to his admired senpai from work, Tsukizawa-san. However, all the drinkeries that Tsukizawa-san brings him to are weird places...!? An adult love comedy featuring drinking spots that exist in real life!
SleepyFoxScans: This series features bars and other drinkeries that exist in real life! Each chapter shows the characters' experiences at these interesting drinking spots. A lot of the places are pretty interesting, and you might find one you want to visit if you ever take a trip to Japan. The romance takes a bit of a backseat to the drinkeries in this manga, but there's still some to be had.
Purchase: ebookjapan, Kindle, Bookwalker