Taishi Shotoku recurs in historical parody segments as an imperial envoy undertaking diplomatic missions to China alongside Ono no Imoko. Extended sea travel induces severe mental deterioration in both characters, manifesting as erratic behavior and emotional distress from travel-induced insanity.

Their arrival in Luoyang reveals Emperor Yang of Sui as an extraterrestrial entity from planet Octopus, disguised in human form to manipulate minds. Delivering the Japanese emperor’s letter to this alien ruler triggers chaotic and disastrous consequences, escalating the mission’s absurdity.

Following the Luoyang incident, Shotoku returns to Japan to oversee construction projects, including Hōryū-ji temple. Discovering the project stalled in planning stages despite expectations, he demands immediate completion within one day. This forces unconventional construction methods that drastically alter the temple’s design. His subsequent invitation to Ono no Imoko to inspect the hastily built structure leads to fatal outcomes for both individuals.

Throughout these events, Shotoku exhibits mental instability stemming from extreme circumstances. His portrayal contrasts his dignified historical role with the narrative’s nonsensical situations, deconstructing his legacy comically.