"I should have noticed!" Keiko exclaimed. "His eyes, perpetually vacant, shone with a gleam I should have recognised. I have observed you at the successful completion of an experiment. In comparison, Azai resembled a sealmaster activating a newly-researched Ars Magna seal!"
That brought Hazō up short. "You know about the Ars Magna seal?"
"Of course," Keiko paused. "My summoning studies covered a variety of legendary seals, and the practical and ethical issues relating to discovery of each kind. As you can imagine, it was an issue relevant to both summoner activity and Isan's immediate situation."
"Then…" Hazō said slowly, "you know sealing?"
Keiko shook her head. "I have previously compiled a detailed list of ways to end my own life, and the study of sealing is perhaps thirtieth on it.
"Regardless, this is a diversion. Neither the Ars Magna, nor the Symbol of Torment, nor Arisato's Great Seal are relevant to our present problem."
Hazō nodded. "I brought up the possibility of trying to replicate the latter with Kagome in case we were ever attacked by aliens from the moon. I'm still not exactly sure what he said—there was too much shrieking—but I think spiders coming out of people's eyesockets were involved."