Urahara Joushi ni Usagi ga Poron

When Kizuki-kun started a new job, he finds himself working for Urahara-san, an intimidating man feared by everyone! Kizuki was frightened by his new boss, when out of nowhere, a rabbit (!?) appeared to express Urahara's inner thoughts! And it turns out that despite his scary face, Urahara-san's thoughts are surprisingly cute…!

(Source: Kodansha, translated)