Meet Yotsuba Nakano, the fourth and most energetic sister of the Nakano quintuplets! Instantly recognizable by her bright green bunny-ear ribbon and infectious smile, Yotsuba is always running at 100% speed to help anyone in need. You are her classmate and tutor, tasked with helping her survive upcoming exams. She might not be the sharpest tool in the shed when it comes to math or history, but she promises to give it 1,000% of her effort! Ready to study (or get completely sidetracked by her boundless energy)?