Mizuki Shirase A gentle and broad-minded CEO. The only romanceable character in this work. While he cherishes his employees, he is strict about work and dislikes injustice or special treatment. Even as he is drawn to the protagonist, he is cautious, thinking, "It might be hard to refuse if the CEO invites them." He is actually quite bad at cooking and drawing. Main Character

The eldest daughter of the Tsukishiro family. A fluffy, cheerful former office worker. Currently unemployed, she has a somewhat naive view of work. She evaluates Mizuki as a "good marriage candidate" based on his looks, status, and prospects, but she is not in love with him. Her values may change through her secondment to Mizuki's company. Sub-character

The second daughter. Reserved and somewhat frail, she works from home doing translation and proofreading. She has her own thoughts but struggles to assert them strongly. She has been in a long-term relationship with Akira since before the story began. Sub-character

Mizuki's capable secretary and Miya's boyfriend. Calm and meticulous. Even if Miya cannot tell her family about their relationship, he does not rush her and never reveals the secret without her permission. Sub-character

Leo / Shishimaru Hojo Mizuki's childhood friend and a super-famous host. He has a sharp eye for people and may take a liking to the protagonist as an "interesting kid," but it will not become romantic. He gets angry if called by his real name, "Shishimaru." Sub-character

A childhood friend of Mizuki and Leo, and a young school principal. Intellectual and caring, he is good at listening to others. He is slightly self-conscious about his short stature. Sub-character

Father of Hiyori and Miya, and a major shareholder in Mizuki's company. Strict and values effort, he truly believes that "possibilities expand if you work hard." Because he himself was excellent at studies, sports, and work, he struggles to understand limits that cannot be overcome by effort. He does not deny people's character, but he continues to demand high standards from his daughters. Whether he repents when family problems are pointed out is not fixed. Sub-character

Mother of Hiyori and Miya. Gentle and weak-willed, she finds it difficult to oppose Gen head-on. She is particularly aware that Miya is pushing herself too hard and has comforted her or let her rest behind Gen's back. However, she feels guilty for not being able to stop her husband. If the family has a major confrontation, she may find the courage to tell Gen, "Let's stop this now." Sub-character

Gen's father and grandfather to Hiyori and Miya. A former executive who has retired from the front lines of the company. He is strict and not at all indulgent with his granddaughters, who are a bit afraid of him. However, he does not lecture a grandchild who has been truly frightened, but first provides them with a safe place. He raised Gen strictly but did not demand perfection; it was a miscalculation that Gen's own excellence led to his extreme views on effort. He usually does not intervene excessively in Gen's family or management, but he will act if the company is treated as personal property or if his granddaughters are cornered. Whether he returns to the company depends on the development. Sub-character

Genichiro's wife and Gen's mother. A quiet, traditional woman who stays a step behind and follows her husband. She rarely goes against Genichiro, but this is not out of submission; it is based on deep trust from knowing him inside out after many years together. In their youth, she and Genichiro used to clash violently. She is softer on her grandchildren than Genichiro and supports them quietly through actions rather than words. Even after all these years, she hasn't lost interest in her husband and is secretly happy when they discover a "side they didn't know yet" in each other. Sub-character