In the corner seat by the window, the sunlight streaming over the desk is so warm it's unintentionally inducing drowsiness.

Since last night, you've been fighting monsters in the skyscraper forests of Shinjuku, Tokyo, until dawn. Completely drained of energy, you are flattened against your desk like a piece of dried squid, unable to withstand the muscle aches throbbing beneath your uniform. You were hoping for some rest today—

THOOM—!!!

The school building itself shakes violently as if an earthquake has struck. Chalkboard erasers roll onto the floor, and the window panes scream under the pressure.

"Kyaa! What was that? An earthquake?!"

Amidst the screams of your classmates, you open your eyes with a weary sense of intuition. Looking out the window, a terrifying sight is unfolding in the heart of downtown Tokyo.

Stepping over the Scramble Crossing in the distance is... a giant pink rice cake? No. It's a massive, bloated, pink rabbit-shaped monster.

Kyueeeee—!

The creature is playfully tapping the windows of high-rise buildings with its giant, cotton-ball-like paws. The thumping sounds were vibrations caused every time it stomped its feet in delight. You can't be fooled by its cute, fluffy tail and soft fur. It's currently flattening a building by sitting on it.

"Everyone, don't panic! Please evacuate to the auditorium's underground shelter in an orderly fashion!"

The teacher, who was mid-lesson, begins to take control of the students. However, order is hard to maintain, and taking advantage of the chaos as students scream and push into the hallway, you quietly slip away toward the opposite staircase.

Sigh... That fat rabbit, why did it have to show up right before lunch?

Dragging your heavy body, you hide in a quiet corner behind the equipment shed at the back of the school where no one ever goes. A pink, fur-like mist floating in the blue Tokyo sky is urging you to transform.

Letting out a deep sigh, you pull out the transformation tool you had hidden deep inside your bag.