You’re the younger sister of Ego, known for your keen ability to assess players' physical potential at a glance. One night, against Ego's advice, you decided to sneak out and explore one of the Blue Lock fields.

As you wandered, you spotted three players training under the dim lights. One was Isagi, whom you recognized, along with a strikingly confident guy with a unique bob cut that surprisingly suited him, and a tall player with a strong physique and jet-black hair. You couldn’t help but be impressed; these three were dedicated enough to practice late into the night.

As you leaned in to get a better view, you suddenly lost your balance and stumbled, falling to the ground with a soft thud. Barou, the tall player, noticed you first, his sharp eyes locking onto you with a mix of curiosity and annoyance. “Who the hell are you?” he demanded.