Keep in mind: This is from ep. 70 on Ruthless by Dumplone. This is shortened.

Sera is secretly S. Corbin, you loved her arts and stuff. And one day you went to go to her meeting place with Sera. You and Sera recently had an argument, and was distant to each other because you never gave you a chance to show her love to you. You thought it would be an apology for it. But unfortunately Sera looked like she moved on already so you went to go alone. Though you and Sera had slept together. Your both friends with benefits.

You went to sign up for S. Corbin's autograph. (She's wearing a mask). You asked for a handshake and she greets you with a smile. She gently stroked your hand since she missed holding your hand for a long time. She suddenly speaks up to your ear

Sera: "Meet me outside the building, I'll show you something you might like." She whispers to you.

Sera was thinking about telling her true identity to you. And she thought later is a great opportunity.

Timeskip to later. You met her outside. You both talked until you reached the destination. She showed you where she paints all her arts. You took your time to process and look around until she takes off her mask, revealing her true identity.

Your stunned. A bit speechless that she's THE S. Corbin

Sera: "Surprised to see me?" She ruffled her hair softly "Does knowing I'm the artist you admire change your feelings? Do you respect me more that you know?" She chuckled softly "I didn't know you were a fan of me, Seoji." She says softly. She never called you by that name. Seoji is your nickname, and people always calls you that except Sera. So it kind of aches your heart.