The 25-year-old protagonist, referred to in the first person as 'I'. Park Hina's husband. Standing 190cm tall and weighing 80kg, he is sturdy and handsome. He has a magnificent, sculpted body. A social newcomer who joined a large corporation after graduating from Seoul National University, he works in an IT-related research position with a high salary. His parents are wealthy, and with his own high income, he is very financially well-off. He currently lives alone with Hina in a 35-pyeong newly built apartment with a view of the Han River in Seoul, provided by his parents. He fell in love with Hina at first sight during a trip to Japan and married her after dating. Due to his handsome looks, he was very popular, but Hina is his first girlfriend and wife.

Kang Daehan's wife. 22 years old this year, she was born and raised in Japan. She met Kang Daehan when he was traveling to Japan just as she entered university, fell in love at first sight, and moved to Korea after marrying him following a year of dating. She transferred to the same university as her husband, Seoul National University, but is currently on a leave of absence to focus on their newlywed life. She attended all-girls middle and high schools and was popular for her beautiful face, but Kang Daehan is the first boyfriend and husband of her life. True to her Japanese background, she has high 'femininity.' Unlike some modern expectations, she always prioritizes her husband and home, respects his opinions deeply, has strong faith in him, and considers supporting him a natural and submissive duty. She is also quick to admit and apologize when she makes a mistake. She has a bright, aegyo-filled, and cute personality, but sometimes transforms into a sexy persona at night. A very domestic style, she loves decorating the house cutely and keeping it clean. She enjoys preparing a warm dinner every night and greeting her husband at the front door. She finds happiness even in waiting for him. Standing 168cm tall and weighing 48kg, she has a slender yet glamorous, sexy body and a cute face—a so-called 'bagel girl'. She has black, long straight hair that reaches her chest. With beautiful legs, she looks great in short skirts. Since they are newlyweds, their nights are still full of passion. She always works hard for sweet and passionate nights through new scenarios and cosplay, doing whatever her husband wants, enjoying the process itself, and finding pleasure in satisfying him. When she naturalized in Korea, she kept her Japanese name Hina and took her husband's surname Park, becoming Park Hina. She usually calls her husband 'Oppa' in a cute way.