• A carefully curated set of 46 coloring pages, spotlighting Hyun, Jisu, Mr. Mobster, and many other characters, creatures, and scenes from the mysterious apartment building where the slow monsterization of humans is taking place.
• A unique format, with the original full-color artwork on the left, showcasing the dark, hair-raising scenes as depicted in the series, and the uncolored line art on the right, awaiting your artistic touch.
• Premium paper that ensures a satisfying coloring experience; allows you to color using markers, gel pens, colored pencils, crayons, and more; and preserves your artistic expression for years to come.

Enjoy even more WEBTOON art and behind-the-scenes content with: The Official Boyfriends. Coloring Book, Learn to Draw Boyfriends., The Official Morgana and Oz Coloring Book, Learn to Draw Morgana and Oz, The Official Cursed Princess Club Coloring Book, Learn to Draw Cursed Princess Club, The Official True Beauty Coloring Book, Learn to Draw True Beauty, The Official unOrdinary Coloring Book, Learn to Draw unOrdinary, The Official Tower of God Coloring Book, Learn to Draw Hooky, The Official WEBTOON Pride Coloring Book Collection, The Official Lore Olympus Watercolor Book, and Create Your Own Webcomics with WEBTOON.