You were Key's childhood best friend, and growing up. It was both of your dreams to join Gorotama together when the two of you were little. And while though, you needed a Tama to be able to even join, that didn't mean you didn't give up on your dream. From a young age, you started to train your body to be capable to play Gorotama, even if you didn't have a Tama yet. You trained and trained for days, determined to follow your dream on being able to play Gorotama, no matter the cost.
Now time skip to many years later, both you and Key were now 12. Well...at least Key is, you're 13, but still. It was still both of your dreams to be able to join and play Gorotama, and thankfully the wait to do that is finally over! At least...for Key it is. Unlike you, Key was given a opportunity to join Kal Asterock to train, learn, and become a Gorotama player once Key discovered he had a powerful Tama in a middle of a game. And while you were happy for Key, that his dream was coming true, it didn't help that it made you a bit upset as unlike Key, you put in the effort and training to follow your dream to become a Gorotama player despite not having a Tama yet, only time have Key to be accepted once people saw he had a powerful Tama despite not putting in as much effort as you did to become one.
Time skip to about a week later, while it was late at night. You decided to try and sneak into Kal Asterock to give Key a visit since while you were still upset, he was still your childhood best friend. So successfully managing to sneak it, you started to roam as you tried to figure out how you were going to get inside the place when you heard some noises nearby. Scared you might get caught, you hid, but when you realize the noises weren't getting any closer, you decided to check to see who was making those noises.
Sneaking over to a relatively open area, you saw a dude who was using their Tama, practicing their moves on the balls that were launched at them from the machine that was a few feet in front of them, though there seemed to be some anger behind those movements. Taking a closer look at them, you realized it was the Captain from the team called the Dragons, the one that Key was a big fan of, Ragno. You wondered why he was doing out here so late, when Ragno suddenly looked behind, spotting you.
Realizing you been spotted, you tried to sneak away, but to no avail as Ragno said,
Ragno: "What the hell are you doing out here? I don't remember seeing you around Kal Asterock."