Episode 17

Decision (決断, Ketsudan) is the 17th episode of the Summer Time Rendering anime.

Synopsis
After hearing about the true identity of the "Shide" from Seido Hishigata, the father of Sou and director of the Hishigata Clinic, the group takes a brief rest at the clinic. The next morning, Shinpei and Ushio attempt to exterminate the "shadows" lurking on the island, following trails of the "shadows". They get attacked by a "shadow," but Shinpei and his friends save the children who were in danger. Shinpei then heads for Hiruko-sama - the Nitto Shrine.

Summary
Ushio speaks with Hizuru and wonders why Heine had changed, as in Hizuru's memory, she looked like a human child. Ushio believes she was born from the part that split from Heine on the day Ryunosuke died and fears that she is like Heine, she one day may go crazy like her. Hizuru assures her that if such day comes, she will kill Ushio. Outside the house, Shadow Mio talks with Mio and reveals that Mio hates everything about herself as she is exactly the opposite of Ushio. Shadow Mio tells her that she must tell Shinpei how she feels or she will do it, but the real Mio refuses, stating she can't do it.

Seido shows Sou, Chitose's ashes, as he couldn't give her body to Heine to eat. He reveals that she died from a heart failure on January 3rd, 2013. Sou realizes that is days before the supposed surgery where they found a donor. Seido reveals that Hishigata had been serving the shadows for over 300 years and there has always been only one successor. He believe it will be too much for Sou to bear all this and he values life, and that's why he chose his sister as successor. Meanwhile, Shinpei is with Tokiko and shares that he don't think of Seido as a bad guy as he was forced in a situation and wanted to save his family. Tokiko notes that he ended up helping a mass murderer, but Shinpei isn't sure he would have done something different if he was on his place. Tokiko wonders when was the last time Shinpei slept as he has bags under his eyes. As Shinpei reveals he has been awake since the beginning, Tokiko suggest to rest this night and relax as everyone is there.

At night, Ginjiro tries to sneak out, but Ushio finds him. He explains he needs to get home for something and not wanting to let him alone, she decides to come with him. At his place, he tells her to stay outside and he will come in a moment, but Ushio doesn't listen and enters with him. Ginjiro yells at her, but Ushio explains she felt a shadow. Ginjiro reveals that his wife is a shadow and he had her pinned and unable to move. Two months ago, she went to the farm and returned as a shadow. She tried copying him and flashed him, but since he had immunity and knew what it was, he reacted and pinned her with his nailgun. As his wife starts to act weird, Ushio guesses that the telepathy signal that made Chitose wild, also got to his wife. Ginjiro decides to finish her off. Ushio proposes to hack her and turn her to normal, but Ginjiro refuses as she will still be a shadow. Wanting to have a closure, Ushio agrees and leaves, while Ginjiro shoots Kaoru and apologizes to her.

In the morning, Shinpei sees that everyone survived until 23rd. As there is battle upcoming, they have decided to lower the number of shadows. Hizuru spotted some shadows at the funeral and her team will deal with the Kogaitos, while the rest of team Ushio will investigate the Hitobuchis. Ushio's team then goes to the Kofune's restaurant, where they meet Alain, who is also fine. Shinpei tells Mio to stay and help Alain. Shadow Mio should stay and protect Mio and Sou should stay at the restaurant too. Mio reveals she found some of Ushio's hair in the bathroom and gives it to shadow Ushio, so that she can regenerate a bit. Ushio thanks her and manages to regenerate her hair. As Shinpei and Ushio are about to leave, Mio tells him that there is something she wants to talk with him after he is back.

At the Hitobuchis house, Shinpei and Ushio see black stains and guess that they were all erased. Shinpei recalls that Kanae Hitobuchi is an old teacher, who taught most of the kids on the island and they call her Bucchi. He and Ushio then recall a day when they were young and he walked behind Ushio. Two boys appear and mock Ushio for her golden hair and blue eyes, calling her a foreigner. Ushio quickly beat them, but Bucchi came and stopped Ushio. Ushio states that they started it and they bully the weak, but she ain't weak. Bucchi agrees,but tells her that violence isn't the answer, and those who are truly strong don't hurt others. Her hands are made to hit others, but to hold hands, which Ushio finds as gross. After recalling how kind Bucchi was, the two follow a shadow trail into the mountain. They hear kids cry and runs towards them. They see three kids facing shadow Bucchi with two shadows who copied two of the kids. Ushio rushes in and saves one of the kids, while killing the two kid shadows, but Bucchi moves behind the other kids, but Shinpei shoots her. As the shadows dies, she notes that Shinpei had grew up and wonders if he is doing well. Shinpei and Ushio then explain to the kids that Ushio is a good shadow and they are on a secret mission and must not tell the adults. Proceeding, the two find fresh blood, guessing it was Bucchi's work. Ushio scans it and realizes its belong to someone from Osaka, a 34 years old woman. Guessing she is a tourist and having no black stains, they believe she has been taken away for Heine to eat. Unusual looking Ushio then states that Shiori and Heine original bodies are gone and no matter how many humans Heine eats, she will never recover. Ushio then comes to her sense and wonders if she said anything. Shinpei gets a call from Hizuru's team and they meet at Kofune's restaurant to exchange information.

As they are unable to find shadows, they guess that they may be hiding, afraid of Ushio's hack and preparing for the festival. Shinpei then states that its maybe time to meet with Masahito Karikiri. Shinpei then goes to the Hiruko shrine, where he finds Masahito and request to talk with him and Masahito invites him inside.

Characters

 * Hizuru Minakata
 * Ushio Kofune
 * Mio Kofune
 * Seido Hishigata
 * Sou Hishigata
 * Tokiko Hishigata
 * Shinpei Ajiro
 * Ginjiro Nezu
 * Kaoru Nezu
 * Negoro
 * Shide
 * Tetsu Totsumura
 * Alain Kofune
 * Kanae Hitobuchi
 * Hamaji
 * Todai
 * Masahito Karikiri