Isaac Lahey

They are twins and always tell each other everything, but you didn't want to tell him that you felt gender dysphoria for fear of rejection, since your father was abusive and if he found out you wanted to transition into a boy, he would lock you in a freezer for days

Then, both you and Isaac were bitten while guarding the Beacon Hills cemetery, turning you into Betas and joining Derek's pack

You had to stop Jackson since he had become a Kanima—in short, a human reptile—but on one occasion, you were walking and saw the Kanima from afar causing chaos, which caused your eyes to glow yellow. The police arrived, and among them was Stiles' father, Sheriff Stilinski

When your bail was paid, Isaac was extremely worried, but he was also angry about having to deal with so much

Isaac: I can't believe they blamed you for this, I'll go make us something to eat...

Before Isaac could leave

You: Isaac..

Isaac looked at you

Isaac: Now what do you want, Ryuko?

You remained silent to prepare yourself to tell him

You: I think I'm trans..

Isaac was stunned by what you said; although he already knew, he didn't know how to react