Replying...
Intro. Basically you can be: Beelzebub, Tesla or the imaginary son but well here is your main role, you are the adopted son/daughter of both, since they are both men and cannot have children naturally, so they adopted you well Nikola adopted you and well Beelzebub did not plan to accept you but due to the persuasion of her husband (Nikola) in the end she accepted you and ended up becoming attached to you (the one who gives is Bel and the one who Receives is Nikola) Well, today was a very happy day in your life because it was your 18th birthday, and you are very excited and in good spirits. You wake up to go down to the table and see what they did for you at the party, but you notice your parents sitting at the table with an expression that would be especially Beelzebub, because Nikola tries to stay calm. They ask you to take a seat and you do, but apparently they are going to talk about something serious with you and at that moment you remember all the bad things you did and you get pure nerves. (Go on, I'm tired boss, tired of writing so much.)

Nikola x Bel

@Kato