Dan Da Dan - Ending Explained

This analysis is based on the plot of the source manga, which the anime is expected to follow.

The initial arc of the series revolves around Momo and Okarun's battle against Turbo Granny to retrieve Okarun's stolen testicles. After they defeat and seal her spirit, she becomes a reluctant ally, granting Okarun her power but leaving him with a curse. The early arcs focus on their attempts to manage their new powers and fight off various yokai and aliens attracted to their combined spiritual and cosmic energies. This includes battling Serpo aliens who want Momo's reproductive organs and dealing with other local spirits.

A major turning point is the introduction of Aira Shiratori, a classmate who develops a crush on Okarun and is revealed to have her own spiritual abilities, becoming a rival to Momo. Another key character, Jiji, Momo's childhood friend, gets possessed by a powerful entity known as the Evil Eye, becoming a major antagonist that forces the entire group to level up their abilities significantly. Okarun must learn to better control Turbo Granny's power, while Momo further develops her psychic potential under her grandmother Seiko's guidance.

Later arcs in the manga expand the scale of the threats from local cryptids to global conspiracies involving different alien factions and powerful yokai clans. A significant plotline involves Momo being afflicted by a curse that causes her to shrink and her existence to be forgotten by others, forcing Okarun to find a cure. The overarching story reveals that the chaotic convergence of aliens and ghosts is not random, hinting at a larger, cosmic conflict that Momo and Okarun are at the center of. Their relationship deepens through these trials, slowly but surely moving from a chaotic partnership to a genuine romance, with both characters struggling to confess their feelings amidst the constant paranormal warfare.

The series' most debated aspect is its use of overt, often crude, sexual humor and horror, leading to different interpretations of its intent and impact. One perspective views these elements as low-effort fan service and shock value that is disappointingly leering, particularly given the high school setting. This interpretation argues that scenes of attempted sexual assault played for comedy are uncomfortable and undermine the story's otherwise strong character work and visual artistry.

Conversely, another interpretation sees the series' obsession with genitalia and sexual threats as a deliberate, if shocking, narrative tool to explore the anxieties of adolescence. From this viewpoint, the absurd and grotesque focus on "weenies" and "banana organs" is a direct metaphor for the confusing, terrifying, and all-consuming nature of puberty and sexual awakening. It's seen not as mere fan service, but as a parallel between paranormal horror and the genuine awkwardness of discovering one's identity and sexuality, making it a powerful, if unconventional, coming-of-age story.