Watashi Tokidoki Saikyou Majo ~Heibon Joshi wa Mibun Chigai no Koi o Suru~

The man I met while cosplaying was the CEO of the company where I work!? Sayoko, who is insecure about her height of 175cm, has low self-esteem. However, she loves a certain anime and has a secret hobby of "cosplay." By dressing up as her favorite character, she feels like she has become that character, which gives her confidence. One day, while attending an event cosplaying, a tall, blonde, handsome foreign man says to her, "You are more beautiful than anyone else!" Even though she knows he is talking to the character she is cosplaying, her heart still pounds and her heart starts beating fast. However, this man turns out to be the CEO of the company where Sayoko works! From that day on, she starts seeing him more and more often while cosplaying... But Sayoko's love, while hiding her true self, is... https://www.cmoa.jp/title/326437/