Tadano Yasu

24-hour surveillance of ex-lover's activities. A handsome demon king and an unlucky hero from a previous life. Despite his bad luck, Yuuki Yuta lives an ordinary life. One day, a handsome transfer student, Mazaki Rei, arrives at Yuta's school. Although it should be their first meeting, Rei's sense of distance from the very first day is a bit strange. When Yuta asks him why, he learns that Rei is the Demon King and that Yuta was a former hero in his previous life, And they were even lovers...! Until Yuta's curse is lifted, he and the Demon King begin a 24-hour, indefinite life of surveillance!

Masamune Hanazawa is exhausted from work. Hoping to eat something other than convenience store food, he rings up a housekeeping service, who sent out Natsuki Mikoshiba, a college student working part-time. Natsuki's reserved nature put off Masamune at first, but he's just happy to be served a warm home-cooked meal. But then Natsuki suddenly confesses to Masamune, saying it was "love at right sight"...!

Mao is a new host struggling to climb the ranks. Confident in his looks, he still finds himself frustrated by the lack of requests. His complaints are overheard by Kanamori Hiyori, a staff member from another club, who sharply criticizes him. Indignant, Mao is taken aback when his boss reveals that Kanamori was once the top host and insists Mao take "special lessons" from him. Reluctantly, Mao agrees and starts to find a sense of accomplishment with each lesson. Gradually, he also becomes intrigued by Kanamori himself. Just as things start to improve, the man responsible for Kanamori quitting reappears...

Nao Minase's coworker, Chiaki Ohkawa, has a strong personality, eye-catching good looks, and secures tons of contracts because of that. It's no wonder Nao sees him as a rival while also harbouring feelings of love for him! Ever since entering the company, the two of them have had the same assignments, and their competitive personalities and constant rivalry have made people treat them like a pair. Beyond their stubbornness lies a (supposed) fondness for each other, yet they're stuck in the limbo of unrequited love all because either refuse to proclaim their feelings first! On the brink of that battle, a business trip sends the two men to a hotel, where love can't help but run amok!