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Soo Kyung works as a reporter. She has an older brother, Sung Ho, and younger sister, Joo Mi. She thinks of her two siblings as burdens. One day, Nak appears in front of them. He is their youngest sibling.

A project by the K-Pop group ATEEZ, who will learn new things from child prodigies.

No matter how hard he thinks about it, Todoin Seiya cannot figure out why he doesn’t have a girlfriend in his 16 year lifespan. Physically attractive, naturally smart, athletic and, on top of that, comes from a wealthy and politically significant family. And it’s not like he hasn’t tried either; but every girl he asks out flat out rejects him. Seiya sets a goal for himself to get a girlfriend by the time high school ends and rejection isn’t going to stop him from trying again. But it sure is heartbreaking when you get rejected this many times without knowing why. (Summary from MangaHelpers)

Tsukumo Ryusuke is a quirky, yet brilliant neuroscientist working for the National Research Institute of Police Science. Wielding a unique perspective and psychology, Tsukumo tackles the nation's most baffling crimes and scandals, going head-to-head with the most brilliant and twisted criminal minds. But his eccentricities and poor social timing can also aggravate people and circumstances, further complicating matters.