Fuka, an orphan girl living in Shibuya, is searching for her missing brother Mitsuba—her only family.

During her adventures, she awakens to the magical power hidden within her.

Iris, a skilled mage pursuing the vicious criminal mage organization 'Sky Seeker', takes notice of these siblings who surfaced during her investigation.

The two deepen their relationship and eventually become like family.

Can their bond shatter the conspiracy that awaits?

A modern fantasy ADV depicting the fateful encounter and adventures of Fuka and Iris begins!