At the headquarters of the Mato Defense Force, Ginna welcomes the members of the 7th Squad in Chained Soldier Season 2 episode 4. She asks Kyouka and Yuuki to take the other way. She explains it to Kyouka that it’s the order of the great Ren. Yuuki remembers Ren’s face. He asks Ginna if she thinks Ren is terrifying. She claims that terrifying is the charming of Ren. She’s proud of being Ren’s subordinate. He learns that Ren isn’t just a terrifying person.
Rampage

Kyouka and Yuuki get into a garden. Kyouka reveals Ren built it after she became supreme commander. Yuuki is surprised that Ren owns such a power. Kyouka reveals Prime Minister asked Ren to be her bodyguard. Because Ren maintains good relations with higher-ups. Yuuki realizes that the job Ren mentioned is being the bodyguard. He and Kyouka see Ren having fun with two dogs. Ren is happy to laugh when one of the dogs licks her face. She strokes another dog.
Yuuki can tell that Ren is very happy. The two dogs run around Yuuki. Yuuki thinks the dogs are very cute. Ren thinks it’s wonderful that she’s accompanied by the dogs. She sees that the dogs Kaname and Miyabi like Yuuki very much. She tells Yuuki that the two are older sisters. They will take care of him.
Kyouka wants to know the reason why Ren only summoned them. Ren gets the two dogs to return to the room. She tells Kyouka that she wants to borrow the slave from her. She knows she’s not tired. She thinks the unknown characteristics will appear. They should give it a try.
Kyouka has no choice since it’s an order. She uses her ability Lending. Yuuki transforms. Ren rides him. She notices that the feelings are comfortable. She grabs the chain. Yuuki turns into a black monster. It’s Ren’s new skill Killer Fang. Kyouka sees Yuuki unleashing terrifying power. She tells Ren that the form is too dangerous. But Ren refuses to disengage the form. She sees some Shuuki. She rides Yuuki to the Shuuki. She asks Yuuki to show her his power. He kills the Shuuki in an instant. But they see many Shuuki. Yuuki launches the skill Sacrificial Goat. He eats all the Shuuki. Ren laughs. She thinks the scenery is beautiful. But Yuuki attacks her suddenly. She dodges the attack. She keeps a distance from him. She’s surprised that he wanted to bite her. She thinks he’s not a good dog. She decides to train him.
Kyouka is on the way to Ren and Yuuki. She remembers the rage form of Yuuki. Ren notices that the black Yuuki isn’t afraid of her when they fight in the air. She decides to give him a lesson. She kicks him to the ground. He tries to use the skill Sacrificial Goat. But she crushes him before he launches the skill. She keeps stepping on him. He’s furious to fight back. She dodges the attack. She steps back. She finds out that he recovered.
Ren’s ability Vairocana can let the abilities of eight Buddhas lodge in her eyes. She can use it at ease. What’s even more frightening is that she can use two abilities at the same time. Only Ren knows the whole picture of the eight abilities. Ren releases a light ball. The black Yuuki is knocked away. Ren sits on him. She tells him that it’s the power of his master. She calls him puppy.
Yuuki wakes up on the ground. Ren decides to give him a reward since he did a good job. She takes off her pants. The Ultimate of Life Ren Yamashiro. Earth’s Answer Ren Yamashiro. Ren got first place during the mock exam. She won the championship in sports. She became the president of the students. She defeated the Elite Forces of ability users. President witnessed Ren defeating the ability users. She praised her.
Ren is surprised that Yuuki wants to get the reward. She takes off her clothes. She mistook that he’s just a cut dog. But he’s a beast. She cannot stop the stupid action with her abilities. Kyouka could deactivate the transformation of Eternal Chain. But she couldn’t nullify the slave contract. Ren realizes that it’s the same principle as back then. Eternal Chain, the ability is quite peculiar.
Ren gets on her knees to Yuuki. She asks him if he wants her to continue. He’s scared to apologize to her. She licks her face. He strokes her head. She gets angry. Because she thinks he should be the dog. Kyouka arrives after Ren got dressed. She asks Yuuki if he’s fine. Ren asks Yuuki to exercise because her form will make him tired. But Kyouka points out that the problem was the out of control. She thinks it’s too dangerous. Ren comforts Kyouka that she will tame Yuuki. She flies away.
Yuuki passes out in Kyouka’s arms. Kyouka takes a look at the flying Ren. Ren remembers what Yuuki did to her. She falls from the sky. She’s angry to tear up.
Yuuki wakes up in his room. His entire body aches. He remembers he couldn’t control himself. Outside the dormitory of the 7th Squad. Kyouka remembers Yakumo and Ren rode her boyfriend. She cannot focus her mind. The Shuuki tries to touch Kyouka. She’s furious to knock him away. She’s surprised that she’s upset after she lent out Yuuki. Yuuki shows up. He asks Kyouka to train him. She brings up that he’s still very tired. He claims that he’s fine after he had a sleeping. She touches him. It hurts him. She tells him that the side effects of Ren’s form are too strong. She affirms his integrity when she supports him. She mentions what she said that he should sleep well before he recovers. He apologizes to her. He reveals he wanted to train with her. She carries him into the dormitory.
At the headquarters of the Mato Defense Force, Ren has a meeting with the commanders in the meeting room. She reads the report. She finds out that the joint training was highly effective. She decides to hold it next time. Bell notices that Ren is in a bad mood. She’s scared. She wants herself to turn into air. So she won’t be targeted. Ren reminds Kyouka that she asked her to take Yuuki to the meeting. But she doesn’t see the boy. Tenka wonders if Ren has her eye on Yuuki. She has bad feelings. Kyouka explains it to Ren that the training of the 10th Squad made Yuuki look haggard. The boy can do nothing right now. Yakumo is surprised that the little slave’s situation is so bad. Ren smiles. She keeps Bell.
Tenka meets Kyouka outside the meeting room. Tenka guesses Yuuki can be lent. Kyouka is furious to claim that Yuuki looks haggard. Tenka is sad. She thinks the boy is pitiful. She claims that the 6th Squad will provide support if something happens. Kyouka confesses it to Tenka that she mistook that Tenka will ask her to lend Yuuki. Tenka admits that she’s interested in it. But she doesn’t have to be in a hurry. Because she and Yuuki aren’t the relationship anymore. Fubuki shows up. She wants to have a talk with Kyouka.
In 7th Squad’s dormitory, Himari massages Yuuki in Yuuki’s room. He thanks her. She says that she wants him to go back to the job position. She remembers they had a kiss. Kyouka shows up with Fubuki. Fubuki pushes Himari aside. She thinks her daughter didn’t do a good job. She lifts Yuuki’s clothes. She uses the skill massage. He finds out that he regained strength. She asks him to relax. Kyouka watches Fubuki treat Yuuki. She learns that her hands should use that way. Fubuki reveals the art is for healing the fatigue that was accumulated due to a busy schedule. She tells Himari that Azuma Dinner is going to begin. Himari remembers Azuma Dinner is the fight that decides the next master of Azuma family. Fubuki tells Himari that the dinner will be hosted five days later. She asks her to come home at that time.
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Himari is furious to tell Fubuki that she won’t take part in it. She claims that she doesn’t want to see any person of Azuma family. She thinks it’s not her business that who becomes the master. Fubuki invites Himari to take a bath with her. Himari rejects it. Fubuki strokes Himari’s thigh. She thinks the muscles are very firm. She brings up that she was hurt. She thinks it’s a fatal flaw that she has poor performance under pressure. Himari asks her mother not to jump to conclusions. Fubuki decides to kill Himari before Himari brings shame upon Azuma family. Himari learns that her mother wants her to show her power. She grabs her fist tightly. She claims that it’s what she wants. She reveals she wanted to give Azuma family a lesson.
Himari has a meeting with Tenka and the members of the 7th Squad. Tenka leaks that Azuma family is inseparable from the history of the Mato Defense Force. It’s an outstanding family. Tobera Azuma was the former Supreme Commander. Nobody knows if she’s a human or a demon. Kyouka brings up that Tenka is close to Azuma family. Tenka explains it to Kyouka that she does it because the family entrusted the darling daughter to her. The daughter is Yachiho. She brings it to Yuuki that she’s good at communicating with neighbors. He laughs. He thinks she’s amazing. She notices that he feels much better. He reveals it was tired that turning into Ren’s form. She figures it out that it will be hard that if she wants to use Lending. Kyouka claims that she won’t use Lending easily. She plans to make the form of her and Yuuki get stronger. Yuuki comforts his master that he will recover within a few days. He thinks he should thank Fubuki for her massage. But Kyouka claims that she can do the same thing. Because she watched Fubuki’s entire sequence of movements. Tenka wants to learn it as well. Shushu asks Yuuki to give the chance to her. Himari knows her mother will kill her.