Equal Exchange?

Yuuki looked at the rope mark on his hand and couldn't help but sigh. He looked at his back that had turned red. He looked at Akeno who was sleeping after being tired, but the smile satisfaction couldn't be hidden from her sleeping face. He had to admit that this play made a new possibility of game, but he just couldn't love this game. He knew that it was good since Akeno loved to play with his rod then tenderly inserted it into her honey pot. He might have a headache about the future when he thought about how wild she was in this game. He moved closer to Akeno and said, "Akeno, I'll go back first."

"Hmm..." Akeno didn't open her eyes but moved while opening both of her arms while showing her glorious figure.

Yuuki gulped then ate her lips eagerly then before long they started another round of game in the early morning.

---

Yuuki teleported from his home on Kuoh back to his home in Tokyo. He stretched his body and wanted to take a bath since Eriri would come to his house later to look at the progress of voice recording for their game. He wanted to take a bath, but he stopped when he saw Utaha sipping a coffee slowly. He walked to her side and kissed her cheek. "I miss you."

"Hmm...." Utaha hummed while sipping her coffee. Then she sniffed and smelled an intense smell that was familiar to her. She looked at him and couldn't help but ask, "Did you have fun with Akeno?"

Yuuki's expression turned strange and wasn't sure what to say.

"What's that expression?" Utaha asked, then looked in his arms. She saw that there was a red mark that was similar to something. "Why is your hand red?"

"It was the result of our game last night," Yuuki said.

"....." Utaha gave him a second glance then stared at him for a while and said, "I want to try it too."

"...." Yuuki's eyes twitched when he heard about such things coming out from her mouth.

"How?" Utaha asked.

"..." Yuuki sighed and said, "I'll work hard." He kissed her cheek again and said, "I'll take a bath. Eriri will come here later."

Utaha raised her eyebrow and asked, "That airport chest? Is it about a game?"

"You don't need to be that rude," Yuuki said.

"Isn't that a fact?" Utaha asked.

Yuuki looked at Utaha for a while and said, "Utaha, do you want to try to have a flat chest?"

"....."

"What?" Utaha didn't seem to believe what she had heard earlier.

Yuuki raised both of his index fingers and made a gesture of exchange. "You know that I am a magician. I want you to feel how it feels to have a flat chest."

"......" Utaha seemed a bit interested and crossed her arms. She felt that it could be used as her inspiration to write her novel. She thought for a while and asked, "But how are you going to do that? You're going to exchange my breats..." She moved around her breats making it jiggling around.

"And that mad dog's chest, right?"

"......" Yuuki decided to ignore Utaha who had called Eriri a mad dog. He thought for a while and said, "Let's see... How about we said that I have made a device to exchange breats of someone to another person?" He didn't want to show his magic, but with the technology, he might be able to give a camouflage for this experiment.

"Interesting." Utaha nodded and said, "Let's do it. I am also a bit curious."

"Then you need to wait for Eriri first." Yuuki felt that he wouldn't be able to go to the bathroom if he kept talking with her. "Then, I'll take a bath first."

"I'll talk about it with her later," Utaha said.

Yuuki stopped and asked, "Do you think that she'll agree?"

Utaha snorted and said, "Of course! That mad dog's dream is to have a D cup on her pitiful chest."

'D?' Yuuki remembered that Eriri had A cup or smaller. He sighed at her poor development, but he thought that it also gave her a different kind of charm. He shook his head and said, "Anyway, don't make her angry. I'll take a bath for a while."

"Hurry up, your smell is so intense that a girl might faint when she smells you later," Utaha said.

Yuuki frowned and wondered whether he smelled that bad.

---

Yuuki felt that his body was really refreshed after he had taken a bath. He felt that his body was very energetic and wanted to drink something cold. He walked downstairs and saw that there were a lot of people there. He had also seen Eriri there and seemed to be quiet for some reason. He went to take something from the fridge and walked toward them. "Eriri, have you been waiting?"

"No, I have just arrived," Eriri said and looked at him with excitement.

"...." Yuuki was a bit surprised looking at Eriri's expression and he looked at Utaha.

Utaha nodded and said, "I have talked with her and she has said agreed to do it."

"Really?" Yuuki was surprised.

Eriri was a bit embarrassed but nodded. "It's for science and I need to help the progress for the future of humanity." She uttered those words with a serious expression as if she really wanted to help the future of humanity.

"......"

"Are you really going to do that?" Yukana asked curiously.

"If both people agree then why not?" Yuuki said.

"I don't think this is an equal exchange," Ranko said.

"Don't worry, this thing isn't permanent and will only happen for a few hours," Yuuki said. He wasn't sure why but he saw Eriri's expression turned into disappointment.

"There isn't any danger, right?" Shouko asked worriedly.

"No, this is safe," Yuuki said. He took the device and said, "This is the device and let's try it shall we?"

Utaha sighed and said, "I might be feeling a bit regret."

"There is no turning back! You're also the one who has invited me, right?" Eriri said hurriedly.

"You don't need to be that desperate!" Utaha said.

"I - I am not desperate!" Eriri said with a red face.

"Cough! Cough! Let us start our experiment," Yuuki said.

Utaha and Eriri nodded then wrapped the device on their chests.

Eriri observed the device for a while and felt that it was very futuristic with a silver metallic color, but with a hint of feminine with a pink color on its edge.

"I'll start now," Yuuki said and turned on the device.

"I have always been curious about the feeling of having a flat chest," Utaha said with a snort.

"KASUMIGAOKA UTAHA!!" Eriri was mad.

The device started to work and Eriri and Utaha felt that there was a change in their breasts. Even though they didn't feel anything, the change on their breasts was visible on their eyes.

Everyone seemed to watch this scene with astonishment until the last moment they saw that Utaha had a flat chest then Eriri who had pitiful chest had very large breats.

At this moment, Eriri felt that she was a Cinderella who had met her witch mother.

"YES!!!!!!"