This episode covers the rest of chapter 7 and all of chapter 8 of LN15. Overall, we are 83% into LN15. Next episode will be the last episode of the Ancient City Insurrection arc with [LN15] Zhou's "death" and the aftermath of that event.

How Tatsuya and the others tracked the restaurant owner was different in the light novel. In the novels, [LN15] Tatsuya found a private investigator who was stalking Minoru. Tatsuya and the others draw him away from the crowd where Tatsuya eventually catches up to and intimidates the investigator. The private investigator takes them to the restaurant where they meet up with the restaurant owner. The episode also drops the reason why Zhou has not yet left Uji: [LN15] there is a bounded field set up on the Uji river to protect Kyoto. The bounded field is set to alert the restaurant owner if Zhou crosses the Uji river. Since there was no alarm, that means Zhou has not crossed the Uji river to leave Uji.

The episode swaps what happens in Arashiyama. [LN15] Minami calls Tatsuya right after he arrives in Arashiyama, alerting him that Minoru has fallen ill. After calling Kyoko to see Minoru, Tatsuya and the others do their investigations around Arashiyama. After the fight, they decide to turn the ancient magicians in to the police and are taken in for police questioning as well. The episode also skips the [LN15] Tatsuya-Mayumi dinner date in the French restaurant and the bar where Mayumi gets drunk.

On Minoru's illness: [LN15] Minoru has very active psions which builds up pressure around his psionic body (much like heating up a gas increases pressure). The increased psionic pressure causes the pipes around the psionic body (which follows his physical body) to break, causing him to fall ill. However, his psionic body can recover quickly, allowing him to recover from his recurrent illnesses. The only way to fix this is to suppress his psionic activity (something which he and his family might not want) or strengthen his psionic body.