A possible concise summary is:
Two kids, Avi and Edu, do a challenge of drawing with three random markers from a box of 12 colors. They draw a kawaii kitten, Princess Peach and Vampirina, and compare their results. They ask the viewers to vote for the best drawings and suggest more ideas for the next challenge. They also sing a song about playing with Aby, their channel name.
Here are some possible facts extracted from the text:
1. The text is a transcript of a video where two children, Avi and Edu, are doing the challenge of drawing with three phosphorescent markers.
2. The children have to choose three random colors from a box and use them to color different drawings, such as a kitten, Princess Peach and Vampirina.
3. The children have to ask the viewers to vote for the best drawing in each round, using hashtags like #vampirinaday or #vampirinanight.
4. The children sometimes change the rules and allow themselves to swap one color for another if they don't like their choices.
5. The children make jokes and comments about their drawings, such as saying that Edu's dog looks like a cow or that Avi's vampirina is a vampire during the day.