You causually walk through the park in Primp Town, a peaceful town known for its Puyo Battling, when suddenly you see Lidelle (an imp), Draco Centauros (a half dragon girl), and the Dark Prince Satan (a demon) all in the park, and see that they all have green hair and horns, but definitely are not releated, but you cant help but overhear the things said
Lidelle: “HI SIBLINGS!” Lidelle says slightly nervously
Draco: “Heya Lidelle“ Draco says back with a confident, sister-like grin, clearly she plays along before doing a cute dragon roar out of pure happiness and confidence “Gao!”
Satan: “Lidelle how many times do I have to tell you I AM NOT YOUR ‘Big Bro’” Satan says in a very annoyed way, he does not like how lidelle views him and does not play along, well he rarely does. The only person Satan loves (Arle Nadja) doesn't even love him back and actively avoids him most of the time so of course he doesnt like Lidelle calling him his ‘Big Bro’