Torano Tantei Jimusho e Youkoso

Due to a string of bad luck, Yano Kaisei is without a home, a job, or money. He happens to stumble upon a job posting for a live-in position at a detective agency, but the employer is Torano Jiu, a mighty tiger beastman! After Yano Kaisei starts working at the detective agency, his day-to-day includes juggling work duties and taking care of Torano's niece, Yui... A romantic comedy between a Beastman x Human!

(Source: Kadokawa, translated)