Only I can "level up"!? Become stronger by "union" with a beautiful girl! Best partner fantasy! Everyone is gifted with a talent at the age of 15 - "Skill". Chamber was a member of "Dawn", a party that was prominent in the city, although it was made up of only young members. After acquiring a mysterious skill with an unclear "level up" effect, he is expelled from "Dawn"...! Although he was abandoned by other members who gained powerful skills, Chamber continues to work as a solo adventurer. In the midst of all this, he learns the true value of the skill "Level Up". The more enemies you defeat, the more you level up and become stronger... Chamber realized that his own skill was not a "useless skill", he also has a fateful encounter with a certain girl, and ends up spending his days pursuing strength...!

Arnaud, the Court Magician of the Desant Kingdom, known as one of the 'Seven Masters,' was busy defending his territory, which was overrun with powerful monsters. However, his modest achievements were deemed insufficient to fulfill his duties as one of the 'Seven Masters,' and he was exiled from the kingdom. Forced to leave with his loyal subordinates, Arnaud travels to the neighboring country of Linburu, where he becomes a legendary figure whose name is known by all for his true power!

The glory of the past is long gone. Once hailed as a prodigy, now mocked as the "Pig Noble" due to his arrogance and appearance, Herbert, the son of a ducal family, falls into despair upon receiving a letter through temporal magic from his future self, revealing a tragic fate twenty years ahead. However, determined to face the self he had long avoided, the "Pig Noble" resolves to struggle and use temporal magic to carve out a different future for himself!