The TV anime "Hikikomari Kyūketsuki no Monmon" has announced that Aoi Yūki will join the cast, voicing the character Proheliya Zutazutaski from Episode 10 onward. Proheliya is one of the generals under Rikuto Hyō, serving the Hakkyoku Federation and known for her expertise with firearms. She is described as a bold personality who charges across battlefields with hearty laughter, yet also possesses a surprising talent for playing the piano. Although she belongs to the Sōgyoku species, which inhabits the cold regions of the Hakkyoku Federation, Proheliya is unusually sensitive to the cold and always wears warm clothing.

The episode "The Princess of the Kingdom of Aruka" delves into the plot, focusing on the deteriorating relations between the Gera-Aruka Republic and the Murnight Empire. Despite an alliance with the Amaterasu Paradise, tensions escalate when the Gera-Aruka Republic declares war on the two allied nations, plunging the fortress city of Fall—where Komari is taken—into a state of war.

"Hikikomari Kyūketsuki no Monmon" is a fantasy comedy centered around Komari Gandesblood, a young noblewoman from the prestigious Gandesblood family and a vampire who cannot drink blood. After three years of reclusive life, her lovestruck father appoints her as the "Shichikōten Daishōgun" (Seven Crimson Heaven Great General), where she takes on various missions while concealing her true abilities.