Cuto is an intelligent, bespectacled older man who works as the general factotum for 'The Strongest,' a renowned large-scale adventurer party.

One day, he was summoned by the leader and found himself surrounded by the other party members.

"I'm ordering you to take a vacation."

"I don't need one."

When Ryu, his childhood friend and the party's leader, suddenly ordered him to take a vacation, Cuto initially wondered if he was being fired. However, the situation felt… off.

When Cuto refused the order, Ryu resorted to drastic measures.

Conspiring with all party members, they even involved the Guild and the King to forcibly issue a 'vacation request' for Cuto.

Unable to tarnish the party's impeccable record of 100% quest completion, Cuto reluctantly departed with a travel pass and funds for Kusatsu, a hot spring town.

While Cuto saw himself as merely the party's general factotum, those who knew the truth feared him as 'The Invincible No. 2' or 'The True Mastermind/Hidden Boss.' It was Cuto, in fact, who had trained and nurtured the very party members renowned as 'The Strongest.'

An expert in human resource development.

A professional in business management and logistics.

A fierce deity of victory and strategy, who single-handedly supports the party's frontline.

This unconsciously overpowered workaholic, a cheat in both combat and administration, remains unchanged even on vacation.

He takes in a young girl and teaches her the ropes of combat, continuing his knack for talent development!

He assists the young proprietress who inherited an inn, helping her restore its struggling business!

And while casually crushing the mastermind lurking in the hot spring town, Cuto spends his 'vacation' days in his own unique way.

*Three novels and one comic adaptation currently on sale!