Uchi no Kaisha no Chiisai Senpai no Hanashi

At his job, Shinozaki has this senpai, Katase. She's short and cute, and she absolutely loves to praise her dear kohai! Shinozaki's day is chock-full of her lighthearted teasing, and he's totally okay with it! But when it comes to expressing their feelings for each other, neither senpai nor kohai seems able to work up the courage. With the office peanut gallery cheering them on, including manager Akina and coworker Hayakawa, will this adorable pair ever get together?!

(Source: J-Novel Club)