There's a Cat Girl in My Cubicle! Omnibus

An otaku named Kazuki is transported to the magical Silver City, where various fantastical races coexist, with a particular fascination for cat girls. After rescuing a cat girl executive, he becomes a Security Specialist at the notable firm 'Whisker Wonders,' where he faces eccentric clients and emerging threats. This isekai adventure combines action, humor, and romance as Kazuki navigates his new role and the society's vulnerabilities.