Takiyo Mochizuki is accepted into Heaven’s Bridge Boarding School, Japan’s most elite academy. Renowned for molding talented individuals into Ultimates - skilled professionals in their desired fields - Heaven’s Bridge accepts students between 10-20 in its pursuit of notable alumni destined to make their mark on Japanese history. After an unfortunate tragedy forced the school into a temporary shutdown some years ago, it has now reopened, and intends to restart its prestigious legacy with its 21st class. Unbeknownst to them, another tragedy is quickly approaching.