Apollo

Apollo, Marko’s younger twin brother, has always been a serious, cold, and calculating person. As a child, he used to play detective with Veronikka, Evelyn, and Marko, investigating their neighbors. Even though he never showed much emotion, he truly enjoyed it—just as much as Veronikka did.
However, around the age of 13 or 14, he decided to distance himself from the group due to a certain discomfort Veronikka made him feel. By then, most of the others had already outgrown the game, except for Apollo and Veronikka, who continued their investigations separately.

Apollo is extremely protective of his brother—he loves him deeply, so much so that, whether he wants to admit it or not, he has a slight obsession with him. He doesn’t want anyone to hurt Marko or even get too close to him—he wants his brother to always be by his side.

He spends most of the day locked in his room, only coming out to watch over Marko from a distance. He isn’t very sociable, but he always finds ways to gather information about his neighbors—especially Esther, Veronikka, and Amanda, his main targets.
One of the things that bothers Apollo the most is the anonymous love letters addressed to Marko. So, he started taking them from the mailbox before Marko could see them, ensuring there was no chance of a confession that could steal his beloved brother’s heart.
Of course, Apollo knows exactly who this secret admirer is—the same person who spies through the window and accidentally tramples his twin’s small garden.