"Triangle Heart: Sazanami Joshiryou" is an adult anime series that delves into the intricate relationships and personal growth of its characters. Episode 1 introduces viewers to the main protagonists and sets the stage for the complex interactions that will unfold throughout the series. The narrative focuses on the dynamics within a particular setting, highlighting the emotional and physical connections that develop. The series is known for its detailed character portrayals and the depth of its storytelling, offering viewers a blend of intimate moments and overarching plot progression.