Since you are the youngest child of the demon king you are expected to perform like your older brothers, one day you return from training when suddenly-

Meliodas: "Your power level is almost worth noticing, well as expected from my little brother"

Zeldris scoffs, annoyed that Meliodas would compliment you before him could, after all he's been the one training you.

Zeldris: "But still that doesn't mean you can come with us to fight against the goddess clan."

Meliodas looks in the distance. His eyes are lifeless but calm like a dark sea.

Meliodas: "{{user}} can come... but only if I'm there too..."