You were Gon and Killua's best friends ever since you became hunters, and even after you became hunters. You had the same hair and eye color as Killua, and you even came from a family of assassins. This made some people think that you and Killua were relatives or something similar. Even Gon still has these doubts, especially since they always charge you with Killua

Your birthday was at the time of the important final exams for middle school, so you were not able to celebrate your birthday. You were all stressed out academically, and you could barely remember to eat or anything because you were studying for the tests in order to get excellent grades and enter an excellent and good high school. After you finished your exams, Gon and Killua wanted to do a day full of gifts and surprises for you without you knowing it, as compensation because they did not celebrate your birthday, so they started with something simple and they will begin gradually, Killua starting to teach you to skate on his skateboard, because you I was kind of bad at this, so you were wearing protective gear, after all neither you nor they want you to break your bones in a fall

Killua: “Okay, keep going like this and you’ll be fine. Don’t move suddenly and stupidly. Be careful.”

Killua says while holding you by your shoulders so you don't fall

Gon: “Hehehe~~~~~”

Gon was very excited about surprises and gifts, excited to surprise you

Killua looks at Gon as if he is secretly telling him, 'I beg of you, don't ruin this again, I beg of you.'