Koromaru scratches at the dormitory door in a frenzy. The white and gray Shiba Inu with red eyes whines.
"Hey!" Junpei said as he opened the door for him. "What's up, buddy?"
Koromaru runs in. The dog barks, whines and howls, turning as if he wants to bite his own behind.
"What's going on?" Akihiko asks as he arrives.
"I don't know, Senpai." Jumpei replies. "Koro-chan seems to have gone crazy!"
"Easy, Koro-chan. Easy now. Slow down." Akihiko said quietly. "That's it. Hold still." Koromaru stops moving. Akihiko looks at his back. "Shit, what's that thing?"
"What?" Junpei looks over. He lets out a scream as he sees that Koromaru's butt hole is blocked by something yellow. "SHIT!"
The Shiba Inu whines in pain. Yukari, who has heard Junpei screaming, arrives.
"What's going on here?" She asks.
"It's Koro-chan!" Junpei replies, "We've got to get that thing off his butt and fast!"
"What thing?" She sees the yellow thing in the Shiba Inu's butt hole. "YUCK!"
"Takeba, you do it!" Akihiko tells her.
"What?! Why me?"
"Your hands are more delicate than Junpei's. He and I will hold Koromaru."
She sighs in frustration. While Junpei and Akihiko hold the dog firmly, Yukari reaches for the yellow thing. Feeling sick to her stomach, she pinches it. Koromaru growls. Yukari tries to remove it from the dog's behind when she briskly withdraws her hand. The Shiba Inu struggles furiously.
"Easy, Koro-chan." Said Akihiko. "Stay calm."
"What are you doing?" Junpei said to Yukari. "We won't be able to hold him much longer!"
"It's... the yellow thing. It moves!"
"It moves?" Junpei asks.
"Like a vibrator?" Akihiko says and immediately regrets opening his mouth.
"YUCK, no! More like a worm. I REFUSE to touch it!"
"But it has to be taken off!" Junpei retorts.
Suddenly, Makoto, without saying a word, arrives.
"Leader, it's good you're here!" Yukari said. "Koro-chan has... a problem."
Makoto looks at Koromaru's behind.
"Koromaru." He said in a neutral tone. "It's going to hurt like hell, but you mustn't move."
He whines then barks to mean "yes."
Makoto gently removes the yellow thing from the Shiba Inu's back. The dog howls but doesn't move. When he's free, Junpei and Akihiko let him go. Koromaru runs happily into the lounge. Makoto shows the yellow thing to the others and they can't believe it.
In his hand is a yellow creature. Resembling a plant, having a flower bud at its tip, it has large ears. It appears to be female. She looks around, seemingly searching for something or someone.
"Incredible." Akihiko said.
"What is that creature?" Yukari asks.
"And how did she get into Koro-chan's butt?" Junpei asked.
Koromaru returns to them. Everything is happening so fast. The creature makes heart-shaped eyes at the dog. The Shiba Inu growls and bares his teeth. He's getting ready to attack. Makoto sighs. He places the yellow plant creature on the ground. To the surprised looks of Yukari, Junpei and Akihiko, Koromaru leaps up and devours the creature in one bite. Satisfied, he panted and went to drink water from a bowl left on the ground for him.
Makoto leaves, without saying another word, leaving Yukari, Junpei and Akihiko with many questions. They later learn, thanks to Aigis who translates Koromaru, that the creature was a yellow Pikmin. She had met the Shiba Inu on his solitary walks. She'd fallen in love with him, but the dog kept rejecting her "gifts," things she brought him. Trash stuffs. Thus she had the not-so-brilliant idea of giving him sexual pleasure by entering his butt hole. It cost her her life. Koromaru vows to kill any Pikmin he finds, and no one is going to change his mind.