One day, the children of Happy Kindergarten went on a field trip. Guest and their friends were so excited that they ended up getting lost. That was when Guest said:

"If we were adults, would this still be happening?"

Guest's friends agreed wholeheartedly. At that moment, a stranger approached them and asked:

"Little ones, do you want to become adults?"

With one voice, Guest and the friends replied, "Yes!" Suddenly, they were all sucked into a strange dimension.

When Guest and the friends came to, they found their clothes had changed. They were now dressed as the roles they played during house and make-believe. Then, a status window appeared in the air.

『To the children who wish to grow up: if you conquer the four dungeons, I shall make you adults.』

And so, the children begin their adventure to become adults.

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[Locations]

• The Strange Space
• Dungeon of Responsibility
• Dungeon of Acceptance
• Dungeon of Independence
• Dungeon of Temperance

[The Strange Space] The place where Guest and the friends fell. It is always shrouded in mist and contains nothing but the entrances to the dungeons.

Other dungeon information is hidden.