Goku sat nervously, chewing on a bit of chicken bone from the meal he'd been given. He'd been moved to another cell. There were no bars this time, instead there was just a thick glass wall in front of him blocking out any sound from the outside world. There was a small microphone on either side of the wall, his only way of communicating with anyone. He knew he could break out if he wanted to. He could shatter the glass, blow open the ceiling… he didn't dare. He was afraid of what Kakarotto might do if he was outside. If he saw his family…
"I think I'd kill your boy."
"Shut up…" Goku whispered, hitting the side of his head.
"What should we do, Goku? Pay a visit to Gohan? Maybe see if Krillin wants to play…" the sound of cold, dark laughter… "Haha… you know what? Since you mean so much to me I'll let you decide –"
"Stop it!" Goku screamed, throwing the bone at the floor. "Just go away – !"
"Goku?"

Goku looked up to see Krillin sitting there. Krillin… had Kakarotto seen him? No… he used Goku's eyes. Or maybe… maybe he was just better at sensing ki… Anyway, it didn't matter! This was his friend!
"Krillin!" Goku sobbed, running towards the glass. He banged on it. "Buddy – I thought I was never going to see you again!"
"Goku…" Krillin leant over the microphone. "I can't hear you, use the mike."
"…" Goku moved his eyes down and spoke into the small device. "I thought… I'd scared you."
"You did." Krillin sighed. "I just… I want to know what's going on with you. Vegeta keeps saying you're schizo!"
"Maybe… sort of." Goku lowered his eyes. "I… I don't know what I am…"
"You're a coward."
"Shut up!" Krillin's eyes widened as Goku smacked his own head. "I'm talking to Krillin! Just go away!" Goku moved his eyes back to Krillin and froze when he saw the look on his friend's face. "I'm not crazy! He protested.
"Yeah…" Krillin swallowed. "You're talking to yourself."
"I'm not!" Goku banged against the glass. "I'm talking to Kakarotto! Can't you hear him too?"
"He's not real, Goku!" Krillin looked at him desperately. "You're sick. You're really sick but… we're gonna help you –"
"I don't need your help!" Goku snapped, his eyes becoming tearful. "I just need you to believe me…" he closed his eyes, clutching the mike. "Please Krillin… you're my best friend. You know me. I wouldn't do that…" he sniffed, running a stressed hand through his hair. "I loved Chichi." Krillin softened, leaning down to the mike. He opened his mouth to speak before seeing Goku's face harden in anger.
"Shut up!" Goku roared. "Yes I fucking did! How would you know? You never saw her! … … shut up!"
"Goku!" Krillin cried out in horror as Goku punched his own chest, knocking himself to the floor and beating himself angrily. Krillin banged against the glass, shouting into the mike. "Stop it! You're gonna break your ribs!"

Goku seemed to listen. He stopping his attack, and lay still for a while. He sighed in despair, knowing how it must have looked… he looked like a lunatic. He didn't expect Krillin to think of him as anything else. If Krillin started talking to himself, started beating himself up… Goku wouldn't hesitate to think there was something mentally wrong with him. He was grateful to Krillin for even being here. The fact that he wanted to help Goku showed just how much he cared about him. Maybe that was the worst part…

Goku stood up. He looked at Krillin and made his way back to the mike.
"I… I'm sorry." He mumbled. "I didn't want to scare you."
"Tell me what's going on…" Krillin pleaded. "Goku…"
"…" Goku sighed. "He was just saying some bad stuff about Chichi, that's all."
"What stuff?" Krillin asked. Goku shook his head.
"Just horrible things." He replied. "I don't wanna repeat it." He sobbed a little, his face weakening. "Krillin, you have no idea… it's so hard being in here with him…"
"Goku –"
"I told him I'd fucked her." the prisoned man's voice changed. It was darker. Colder. The man looked up at Krillin, his face hardened and his mouth turned in a cold smirk. His eyes were dark and dead. Evil. Krillin shivered at the change in the man's ki. He suddenly felt afraid to just be here. The feeling of the ki was overpowering, engulfing the entire room in its darkness. It was so strong…

Krillin shifted a little, unsure of why he felt so afraid. It was his friend…
"Goku –"
"Nah." The man said. "Not Goku. Goku's on time out for being so loud. You have to teach them, you know. These humans need to be put in their place."
"…So who are you?" Krillin asked, his blood turning to ice.
"Come on, Krillin." the man replied. "Weren't you listening to him? I thought you guys were friends."
"… Kakarotto…" Krillin whispered. He stared in horror, his eyes wide as the man nodded, grinning nastily.
"That's right." He purred. "So you did know."
"Goku…" Krillin swallowed, unsure of who he was talking to. "Goku said you killed Chichi…"
"Yeah, I did." Kakarotto answered. "You didn't think Goku would do it, did you? He never kills anyone." Kakarotto shook his head. "Fucking weakling… he always puts me to shame."
"He killed Frieza." Krillin frowned, defending his friend. "You're a saiyan, right? You should be grateful that –"
"Goku never killed Frieza, you fucking idiot." Kakarotto growled. "I did. I killed Frieza. Every fight Goku ever went into he took me with him. He wasn't strong enough on his own, he needed me!" he watched as Krillin tried to make sense of the words. Krillin shook his head.
"I don't understand… are you telling me this has been happening since Frieza?"
"Oh, since before then." Kakarotto smirked. "You don't get it, do you? I was here first. It's Goku that's the alter ego. That old man dropped me on my head when I was little, that's when Goku was born. He pushed me out, made me wait in the darkness…" he looked coldly at Krillin, angered at the memories that surface. "It didn't matter how much I begged he wouldn't let me go free. Kind of like Frieza, don't you think?" he leaned closer to the glass, sending a shiver down Krillin's spine. His eyes lit up as he watched Krillin growing more and more uncomfortable, relishing in the smell of the man's fear. "Goku needed my help in every major fight he ever had. Frieza, Cell, Buu… I battled them all because he wasn't strong enough. He didn't have what it takes, he's too human!"
"Goku's a great fighter…" Krillin looked at Kakarotto. "You're lying – I've seen Goku fight… he doesn't need you at all!"
"You're right, he's a good fighter." Kakarotto calmly replied. "He's just not a killer."

Krillin shifted as the saiyan's eyes fixed themselves on him, staring deep into his soul. Trying to break him.
"All Goku's good for is giving people second chances. He hears someone beg and he just can't help himself – take Frieza, for instance. I was so weak from the fight Goku managed to take over… he let Frieza go. Luckily I had enough strength left to come back and blow Frieza to pieces before he killed us." Kakarotto sighed. "For so many years Goku's depended on me to fight for him… you wouldn't even be alive right now if it wasn't for me. Cell, Buu, the androids… I fought them all; the only time Goku ever let me out was during a battle." He looked at Krillin, his eyes sparkling. "Not anymore though…" he smirked. "That jackass has been taking the lead for too long. Just getting me out when he feels like being a hero and locking me back up when all the work's done. I felt like a prisoner…"
"Is that why you killed Chichi…?" Krillin swallowed, nervously watching the saiyan. "To hurt Goku…?"
"Something like that." Kakarotto shrugged. "It was the easiest way to weaken him… not that he cared about it much."
"What are you talking about?" Krillin snapped. "Goku loved Chichi!"
"Not as much as he loved me." Kakarotto smirked. "I was his best friend. We were so close in our childhood…"
"So why did you kill his wife…?" Krillin whispered, his eyes glistening. "Why…"
"Because he killed my brother!" Kakarotto snapped. The anger on his face scared Krillin; he took a step back as he saw the darkness flood into Kakarotto's eyes. A pure, endless darkness… "I watched Goku and his little friend taking Raditz's life. I begged him to stop but he didn't listen to me! He just ignored me and ignored me until there was nothing for me to beg for anymore!" Kakarotto banged on the glass, his anger growing so much that it began to crack. "Raditz died thinking he'd killed me, and that I'd wanted to kill him! It was the only god damn fight Goku ever did by himself!" Krillin shivered as he watched the rage in his eyes grow, backing away from the wall.
"Kakarotto…"
"I've spent every second since then trying to build up the strength to get rid of Goku! That fucking murderer that destroyed my family! The last of my race!"
"Let…" Krillin swallowed. "Let Goku back out."
"Why?" Kakarotto snarled. "Am I scaring you, Krillin?" he watched as the smaller man crumbled in fear, terrified of what he was seeing. Terrified of Kakarotto's existence. Terrified of Kakarotto's strength…
"Let him out." Krillin repeated. "Now!"
"… tch." Kakarotto smirked, calming down a little. The fear that grew in Krillin soothed him. He wanted it. He needed to be feared. He watched Krillin, amused by his anger. His desperation. He smirked again, pitying the man. He knew he had been defeated. "Sure, why not." He replied carelessly. "I'm done with you anyway."

Krillin watched cautiously as he saw the man's face change. He looked softer, kinder. The dark ki that engulfed them slowly disappeared until all Krillin felt was the familiar ki he had grown up with. He gave a deep sigh of relief, and smiled.
"Goku…"
"…" Goku looked over at him timidly, his breathing quiet. Krillin approached the wall and pointed to Goku's mike.
"Say something… please." Goku glanced at the mike below him, and moved his eyes back to Krillin. Not taking his eyes off Krillin's face he reached for the mike and lowered his lips.
"… You look scared."
"I… I guess I am." Krillin said softly. "But don't worry – we'll figure something out." He promised. "We'll find a way to get rid of Kakarotto for good." Goku looked at him, wide-eyed. He squeezed the mike desperately.
"You believe me?" his breathing was frantic. Krillin paused a little. He didn't know how it was possible… Goku had to be insane. He knew that. Kakarotto couldn't exist. There was no way he could exist… but he did. All Krillin could think about was Chichi, and how much he knew Goku loved her. How much he loved everyone. He couldn't be guilty of her murder… there had to be another explanation, another person to blame. Maybe this was it…
"… Yes." Krillin said. "I do." He watched as Goku gave a sigh of relief, tears in his eyes. Goku put a hand on the glass, holding the mike tightly.
"Thank you, Krillin…"
"… No problem." Krillin smiled. Goku was his friend. His gentle, loving friend. He knew that. So Kakarotto had to exist.