Ep 10. The Unfaithful Dog

Ririchiyo is having a hard time adjusting to her life without Soushi, who has gone missing since the incident with Kagerou. She is feeling lonely and vulnerable, and decides to take a walk in the garden to clear her head. While she is walking, she comes across a stray dog who immediately starts following her. Ririchiyo tries to ignore the dog, but it won't leave her alone.

Meanwhile, the other residents of the Ayakashi Mansion are investigating Kagerou's true intentions. They suspect that he was working with a group that is trying to overthrow the government, and that he may have been responsible for Soushi's disappearance. They decide to split up and search for any clues that might lead them to Kagerou.

Back in the garden, Ririchiyo is getting more and more annoyed by the dog's persistent followings. She tries to scare it away by yelling at it, but the dog doesn't seem to understand. Eventually, she gives up and decides to go back to her room. When she gets there, she finds the dog waiting for her outside her door.

Ririchiyo is more frustrated than ever, but something about the dog's sad eyes tugs at her heartstrings. She decides to let it come inside her room for a while, hoping that it will eventually leave on its own. Instead, the dog makes itself at home on her bed, and seems to be enjoying itself.

While Ririchiyo is dealing with the dog, Kagerou's true intentions are slowly being revealed. It turns out that he was indeed working with a group of radicals who wanted to overthrow the government and establish a new order. However, Kagerou's own ambitions were different from the rest of the group, and he had his own plans for seizing power.

As the investigation continues, the group discovers that Kagerou had fled to a secret underground base, where he was plotting his next move. They decide to launch a surprise attack on the base in order to capture Kagerou and put an end to his plans.

Back in the Ayakashi Mansion, Ririchiyo is still dealing with the dog, which she has named Watanuki. To her surprise, she finds that she is starting to enjoy Watanuki's company, and that having a pet is helping her to cope with her feelings of loneliness. However, she knows that she can't keep Watanuki forever, and that eventually she will have to find him a new home.

The episode ends with the group launching their attack on Kagerou's base. Will they be able to capture him and put an end to his plans? And what will happen to Watanuki and Ririchiyo's newfound bond?