신의 탑 (Tower of God) is a popular South Korean webtoon created by SIU. It follows the journey of a boy named Bam as he enters a mysterious tower to find his friend, Rachel. Each floor of the tower presents unique challenges and powerful opponents, testing the characters' abilities and resolve. The story explores themes of friendship, ambition, and betrayal as Bam encounters various allies and enemies. The tower is filled with diverse characters, each with their own motivations and backstories, making the narrative rich and engaging for readers.