This article is about a/an episode in Kamen Rider Kuuga.

Loss (喪失 Sōshitsu) is the eighteenth episode of Kamen Rider Kuuga.


When Yusuke becomes poisoned by a sickly Gurongi, his friends and allies must come together to figure out what to do next.


Bunkyo Ward: Pole Pole, 9:50 a.m.

Yusuke drums on a mismatched assortment of cans and bins as Nana watches. When he finishes, he explains that his 1,808th skill is from STOMP, and will be performing for Minori's kids later. Tamasaburo then tells them to help out in the shop.

Jonan University Archaeology Lab, 11:07 a.m.

Sakurako gets a call from Ichijo, who asks her about her deciphering, but she replies that she doesn’t have anything besides a possible name for the UFO, which is called Gouram.

Chiba: National Research Institute of Police Science, 11:49 a.m.

Enokida is at a loss on how to analyze the pieces of Gouram, aside from having Yusuke touch them.

In Shinjuku Ward, 00:26 p.m.

Me-Ginoga-De, in an alley, has already begun his Gegeru as he kills his 18th woman.

Yusuke then shows off his skills from STOMP to Tamasaburo and Nana, but the shop gets a call from Ichijo telling him about Unidentified Lifeform 26.

In Toshima Ward, 1:13 p.m.

Minori, while taking the nursery children for a walk, tells them that Yusuke will show them his 1,808th skill.

In Shinjuku Ward, 1:19 p.m.

A businessman is killed by Me-Ginoga-De. As Yusuke asks the collapsed man if he is okay, the Grongi attempts to grab him. Yusuke shoves Me-Ginoga-De, who then transforms. Yusuke transforms as well, taking the Unidentified Lifeform by surprise. The two fight, but  Unidentified Lifeform 26 manages to get close to him and blow toxic smoke in his face, causing him to writhe in pain and collapse.  Unidentified Lifeform 26 flees, but when Yusuke attempts to chase him, he is unable to walk and reverts into Growing Form. Ichijo then arrives and sees Yusuke, in his human form, struggling to breathe. Ichijo calls an ambulance and Sakurako, who he tells about Yusuke’s injury, and requests that she tell Minori.

Toshima Ward: Wakaba Preschool, 1:32 p.m.

When Sakurako calls, one of the other nursery workers answers the phone and tells her that she is currently unavailable due to her taking the children for a walk. Sakurako promises to call back as she runs out of the lab.

In Meguro Ward, 1:34 p.m.

Tsubaki is on a date with the woman that he was with earlier and comments that she has both beautiful tibia and a nice collarbone, but is then interrupted by a call from Ichijo requesting that he help Yusuke.

At the crime scene, Ichijo picks up a pair of glasses that the businessman wore when he was attacked. He notices fine particles clinging to the glass and passes it on to the Research Institute for investigation.

Kanto Medical University Hospital, 2:09 p.m.

Tsubaki catches up to the doctors wheeling Yusuke on a stretcher and asks about his vitals.

Toshima Ward: Wakaba Preschool, 2:22 p.m.

The children return, and the worker who took Sakurako’s call gestures her over and puts her on the phone with Sakurako, who tells her about Yusuke. Minori says that while she thinks Yusuke will be fine, requests to the other woman working to see him, which she approves.

Chiba: National Research Institute of Police Science, 2:54 p.m.

Enokida examines some of her equipment as Sugita walks in. He tells her that he visited Kaburagi’s (who was killed by ULF 05) grave. If he were still alive, the current day would have been the date of his wedding. Sugita then passes the pair of glasses that Ichijo found to her.

Kanto Medical University Hospital 3:24 p.m.

Sakurako and Minori both watch the doctors as they try to help Yusuke. Tsubaki steps out of the room momentarily, and Minori introduces herself to him.

Me-Ginoga-De is resting and recovering from the injuries that Yusuke inflicted on him as Ra-Baruba-De arrives and warns him that if he rests, he will run out of time. The other Gurongi then make fun of him, and Zu-Goma-Gu demands that Me-Ginoga-De hand over the bracelet so he can do the Gegeru. Me-Ginoga-De responds by blowing toxic smoke at Zu-Goma-Gu, who then collapses coughing. Me-Ginoga-De comments that his power has almost killed Kuuga, so it will be easier for him to kill more Linto.

Kanto Medical University Hospital, 3:56 p.m.

Tsubaki tells Sakurako and Minori that Yusuke is in a bad situation, but also tells them not to lose hope. Tsubaki then steps out to call Ichijo and tells him that ULF 26’s victims died because the toxin shrunk their internal organs, but Yusuke’s immune response, which is 20 times more compared to a normal person, are fighting the toxin, which is preventing his organs from shrinking. However, this appears to be affecting the Arcle, and it doesn’t appear to be changing back. Tsubaki isn’t sure he can help Yusuke, but Ichijo tells him to tell Yusuke that he’ll be waiting for him. On the other end of the phone, Ichijo curls his hand into a thumbs-up. Tsubaki then returns to the room where Sakurako and Minori are, and Sakurako decides to head back to her lab in case there was the information in the ancient texts that could help save Yusuke.

Chiba: National Research Institute of Police Science, 4:07 p.m.

Ichijo receives a call from Sugita, who tells him that Enokida has analyzed the particles, which are powerful spore but can only survive between 35 and 40 degrees Celsius. Ichijo glances towards the nearby heating units and requests a sweep of the nearby air conditioning units, which he believes is what the Unidentified Lifeform uses to spread the spores.

Tsubaki tells Minori that Yusuke had handmade good luck charms in his pocket and that he should be fine since he isn’t the type of person to make children sad.

As Yusuke struggles to breathe, the birthday gift that Minori gave him is seen on the bed, placed next to his head.

In Shinjuku Ward, 5:18 p.m.

The police, equipped with gas masks, as well as Ichijo, mobilize to attack Unidentified Lifeform 26. Minori then returns to the nursery.

As Unidentified Lifeform 26 attempts to kill an officer by removing his mask, Ichijo shoots it, causing the attempt to fail. However, the Grongi then obscures the area with smoke, allowing it to escape.

Yusuke, in the ICU, is seen breathing, with an increased heart rate. The doctor in the room calls Tsubaki. However, as Tsubaki enters the room, Yusuke’s heart rate suddenly flatlines.


to be added

Form Changes


To Be Continued
(Growing Form ver.)

  • Kuuga - Mighty Form, Growing Form (via weakening)


to be added


  • The name of the main character in the fictional drama talked about on the radio in this episode, Joe Onigiri, and his actor, Shogo Karasuyama, are references to Kamen Rider Kuuga stars Joe Odagiri and Shingo Katsurayama.

Digital Releases

  • The DVD Release of Kamen Rider Kuuga Volume 5 features episodes 17-20.
  • The Blu-ray Release of Kamen Rider Kuuga Volume 2 features episodes 17-33.[1]


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