Elite Joushi wa Kyuuai no Kikai wo Nogasanai

Nanami Chikauchi, a fourth-year working adult, is busy with extra work due to her junior colleague, Moesaki Masui, who is distracted by love and keeps making mistakes. While she's working overtime when no one else is around, she suddenly has a whim and decides to secretly listen to an app that has her voice actor whispering sweet lines to relieve her stress. However, Takayasu Kihara, the most popular manager in the company, finds out about her. After that, the two suddenly become closer! One day while they were eating together and going out on holiday, Takayasu confessed to her. Just as she happily accepts the offer, thinking, "Why did Takayasu, who has a good face, good background, and good personality, choose me?" Source: MU