Takuma Kusanagi, a classmate and close friend of Natsumi Rokudo, is notorious for his unrelenting perverted antics, which escalate dramatically after encountering Mii—Natsumi’s transformed, voluptuous alter ego. Obsessed with Mii’s physical allure, particularly her prominent breasts, he unabashedly prioritizes such traits as markers of female worth, clashing with his dismissive mockery of Natsumi’s flat-chested appearance. This stark contrast fuels friction in their dynamic.

His relationship with father Itsuki Kusanagi simmers with petty quarrels, often sparked by Takuma’s contempt for the family’s antique shop and Itsuki’s expectations. Their strained bond underscores deeper generational divides and communication breakdowns.

Takuma frequently stumbles into slapstick scenarios, such as a botched attempt to revive an unconscious peer via mouth-to-mouth resuscitation, swiftly met with violent rejection. His lewd commentary—comparing statues to Mii or peering beneath sculpted garments—routinely earns him physical retribution from Natsumi.

Expanded lore, including drama CDs, catapults him into surreal escapades: a monster attack propels him into the stratosphere, only for aliens to return him unharmed. Another incident sees him stowing away on a spacecraft, requiring rescue by Mii. These antics cement his role as a catalyst for chaos, often leaving him reliant on others to untangle his reckless predicaments.

Interactions with peers like Nami and Ongo oscillate between sardonic banter and collaborative absurdity, whether probing paranormal mysteries or braving exhibition mobs. Despite his brash persona, fleeting moments of introspection surface—such as grappling with his attraction to Mii while silently reaffirming his connection to Natsumi—hinting at buried layers beneath his comedic façade.