"Pita Ten" is a manga series that blends elements of comedy, fantasy, and slice-of-life, centering on the life of Kotarou Higuchi, a young boy whose ordinary existence is disrupted by the arrival of a peculiar girl named Misha. Misha is a self-proclaimed angel-in-training who descends from heaven with the goal of performing good deeds to earn her angelic wings. However, her clumsiness and naivety often lead to chaotic and humorous situations, complicating Kotarou's life rather than improving it.

Kotarou, a reserved and somewhat pessimistic boy, initially finds Misha's presence overwhelming. Despite her good intentions, her actions frequently cause misunderstandings and trouble. Misha's cheerful and optimistic personality contrasts sharply with Kotarou's more grounded demeanor, creating a dynamic that drives much of the series' humor and emotional moments. Alongside Misha is Shia, a demon girl who is also training to become a full-fledged demon. Shia's serious and stoic nature provides a counterbalance to Misha's exuberance, and her interactions with Kotarou add depth to the story.

The narrative explores the relationships between these characters as they navigate their daily lives, with Misha and Shia often competing to influence Kotarou in their respective ways—Misha aiming to bring happiness and kindness, while Shia tests his resolve and challenges his beliefs. The series also introduces other supporting characters, such as Takashi, Kotarou's best friend, and Koboshi, a shy girl who harbors feelings for Kotarou. These characters contribute to the series' exploration of themes like friendship, personal growth, and the complexities of human emotions.

As the story progresses, the tone occasionally shifts to more serious and poignant moments, particularly as the characters confront their insecurities and the challenges of their supernatural roles. Misha's journey to become an angel and Shia's path to demonhood are central to the plot, with their evolving relationships with Kotarou serving as the emotional core of the series. The manga balances its lighthearted comedic elements with heartfelt moments, creating a narrative that is both entertaining and emotionally resonant.