Shinichirou decides to look for a job in order to pay his rent, and his teacher suggests that he work as a live-in housekeeper. However, the person who hires him is Sakuya Shimazu, the 37th Head of the Shimazu family, and her profession as an exorcist requires her to eliminate unwanted creatures from their realm. During their meeting, Shinichirou accidentally releases one of the creatures, that she had captured, a troublesome (and constantly barefoot) nekomata demon, and they're forced to cooperate to recapture it.
Shinichirou and Sakuya engage the nekomata demon. This eventually results in Shinichirou taming the demon through use of discovering her true name, and drafting the nekotama demon Tama to their side.
Sakuya grows frustrated with Shinichirou's new nekomata companion multiple times.
Tama drinks some milk.
Tempers flare, as Sakuya and Tama fight against each other in school.
Tama collapses after an enlightening evening, revealing to Shinichirou that she needs additional life energy to sustain her form on the physical plane.
After Sakuya fails to subdue a miscreant rat demon, a severely weakened Tama struggles against her opponent to protect Shinichirou. When he realizes that the fights was growing increasingly one-sided, Shinichirou allows Tama to feed off some of his own life energy, enabling her to defeat the rat demon.
Tama helps engage a massive snake demon, to depressing results.
Tama lies unconscious after her disappointing fight against the snake demon.