Nanjou Senmu no Ai ga Omosugiru!: Joushi wa Shuuchaku-kei Dekiai Stalker

Kanami, a second-year employee at a marketing company, has a fateful encounter on her first job with her boss, Nanjo, who is the exact prince of her childhood dreams. He's smart, cool, and perfect - but his true identity is... an obsessive stalker who is obsessed with Kanami! Will his single-minded obsession lead to love? An erotic love comedy!

(Source: Taiyou Tosho, translated)