"Niizuma Koyomi" is an adult anime series that delves into themes of romance and intimacy. Episode 1 introduces viewers to the protagonist, who finds himself in a newlywed situation with his beloved partner. The episode focuses on their developing relationship, highlighting moments of affection and the challenges they face as a couple. The animation is noted for its detailed character expressions and the portrayal of tender moments between the characters. "Niizuma Koyomi Episode 1" sets the stage for a series that explores the nuances of a romantic relationship, appealing to viewers who appreciate narratives centered on love and companionship.