JUQ-915 Imai-senpai, rumored to be the director's mistress, stares at me across the table

Six months into his job, he admired his trainer Imai-senpai. She is good at her work, kind, and beautiful, even though she is married and struggles to balance work and family. He hears a rumor that she is the director's mistress. He sees them meeting in secret, and after that, they start making eye contact more often.