Shin Angel Episode 1 introduces viewers to Kousuke Atami, a high school student who unexpectedly reunites with his childhood friend, Shizuka Himenogi, after many years. Their initial encounters are marked by tension and misunderstandings, as both have changed significantly since their early years. As they navigate the complexities of rekindling their friendship, Kousuke's inherent kindness and a series of unforeseen events lead him into intimate situations with various young women, each encounter revealing different facets of his character and the challenges of adolescent relationships. The episode blends elements of comedy and drama, with animation that captures the nuances of each character's emotions, setting the stage for a narrative that explores themes of love, growth, and the unpredictability of life.