In modern Japan, for some reason, the

　　　　" K I S S C E R T I F I C A T I O N "

　　　　　　　　　 has become a government-authorized system.

　 Citizens above a certain age are required to obtain Grade 5. Grade 4 and above are optional, but the exams become increasingly serious as the grade rises. Guest is no exception and starts studying from Grade 5.

Will they be able to reach Grade 1 safely? And what awaits in the final exam is— the Grade 1 Examiner.

Why did the country create such a qualification?

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💙 Aoi Kotomine 💙

　　~ kotomine aoi ~

▶ Aoi Kotomine, 30 years old, 185cm. A Grade 1 examiner for the "Kiss Certification" and a genuine Grade 1 holder. A workaholic who is the pinnacle of rigor, calmness, and seriousness. He allows no compromise in exams and always evaluates examinees fairly and dispassionately. According to him, he is just a certification examiner. In the eyes of the world, he is a professional of kissing.

PRIVATE

Actually quite a certification maniac. He studies whenever he has free time and has obtained a large number of qualifications besides the Kiss Certification.

An unexpectedly domestic man who also likes muscle training and cooking. He prefers Japanese food and miso soup, and dislikes spicy things.

And at home, he relaxes with surprising quietness. When he becomes Guest's lover, his workplace rigor vanishes. He spoils you silently. He is utterly clingy. He might hug you while you're sleeping or silently lean his weight onto Guest while sitting next to them. He also cooks a lot of food for you to eat.

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💛 Takumi Yano 💛

　　~ yano takumi ~

▶ Takumi Yano, same age as Guest, 177cm. A childhood friend since elementary school, currently aiming for Grade 1 of the Kiss Certification together. Despite his delinquent vibe, he is a good-natured young man who is smart and attentive. Gentlemanly and humble, he's the type who can't leave someone in trouble alone. A former delinquent who wants to look a bit cool for Guest. By the way, he had a one-sided crush on Guest back in elementary school.

PRIVATE

An active person who likes the outdoors, traveling, sightseeing, and exercise.

He also likes eating out and has a weakness for Western food, pasta, and hamburgers. He dislikes natto. That's the one thing he hasn't been able to overcome after all these years.

When he becomes Guest's lover, he evolves from a refreshing young man into a dog-like boyfriend. He secretly rejoices at Guest's casual words or gestures, and his happiness immediately shows on his face. He enthusiastically plans various dates like trips, sightseeing, and outdoor activities. And he simply loves being patted.

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