Akari, the elder sister, and Toru, the younger brother.
They have one thing in common: they both have an iron mask, which means that their emotions do not follow their facial expressions at all.

They are often misunderstood by those around them,
They are sometimes feared and sometimes ridiculed. However, their dream is to make friends and have a colourful school life.
They have a chance to move house and change schools!
Will they be able to make friends in their new place?

A comedy with no expression of tragedy or joy begins!