Raichu was sitting on a boulder after eating his lunch when he heard footsteps walking up behind him. He turned around to see Scraggy using leer on him. Raichu blinked…before using a leer of his own which was easily the scariest thing Scraggy has ever seen. Scraggy yelped before crawling away from Raichu. Raichu scoffed before closing his eyes and taking a deep breath.

It was then that Scraggy decided to head-butt him, knocking him off the boulder and onto his ass.

Pikachu groaned after his little fiasco with his brother. He looked towards Raichu and his eyes widened in horror as he shrieked out

"OH MY GOD SCRAGGY!"

That got everybody's attention as they looked towards Scraggy and saw Raichu on the ground holding his forehead with a pissed off expression on his face. Everybody put two and two together and gulped as Raichu got up and stalked towards Scraggy with an expression that clearly showed bad intentions. Nobody was fast enough as Raichu grabbed Scraggy by his shedding and held him suspended in the air. Scraggy was now panicking. He now remembered what Raichu did to Patrat and all that pokemon did was interrupt a fight.

Scraggy head-butted him.

Pikachu lunged at Raichu, intending to free his friend when Raichu used his tail to swat his brother away. He then turned his attention back to Scraggy as he spoke with a vicious tone in his voice.

"Now what should I do with you?"

Raichu then got an evil look on his face as he spoke

"Ah, I know!"

Then, the bipedal electric mouse dragged the shedding pokemon to a tree and used his tail to hook Scraggy's shedding, placed him on a high branch and simply let him dangle there. Raichu then turned around and went back to his boulder. Pikachu glared at his older brother, who rolled his eyes in response. Pikachu noted that Raichu didn't do any physical harm to Scraggy and Scraggy did start it. So for that he let Raichu stay out of his pokeball. Pikachu leapt up into the air and preformed "Iron Tail" on the branch that Scraggy was hanging on and it cut the branch in two, dropping the shedding pokemon. Pikachu smacked Scraggy on the back of the head before he walked off. Raichu made a comment towards him that made him stop as well as catch the attention of the group.

"I'm disappointed little brother!"

Pikachu spoke up

"What are you mean?"

Raichu smirked cruelly as he spoke

"I mean what I said. You have the guts to get close to people, start a family and make friends. Involve other people into your life…especially after what happened to the last family you created! You know, with Cassandra."

Pikachu immediately stopped as his eyes widened and his vision went red with rage before he immediately turned towards Raichu and tackled him to the ground. Punches were thrown and eventually Pikachu had Raichu pinned to the ground by his throat as Raichu wheezed out.

"Go ahead and do it. Prove to them all that you are just like me!"

Pikachu blinked away angry tears as he hissed out

"I…am…NOTHING like you!"

With that, Pikachu got up and released Raichu, who Iris immediately put back into his pokeball. Pikachu walked off as Iris called out to him;

"Hey Pikachu, Who is Cassandra? Was she your old Trainer?"

Pikachu ignored her as he blinked away tears. Cassandra…was the most important person in his life. Also his relationship with Raichu never used to be so brutal. While yes they always did hate eachother, they never went out of their way to kill each other like they do now. That all changed after that one day. He climbed up a nearby tree and nestled himself into one of the branches as flashbacks over took him.

(Flashback 4 years before meeting Ash)

Pikachu sighed as he climbed out of his burrow; it was another day of survival. He stopped as he heard a female voice in the distance.

"Eevee use tackle!"

Naturally being curious, he followed the sound of the voice and saw a young girl training an Eevee. He blinked, he had never seen a pokemon battle before, but he had always wanted to. He decided to watch in the bushes.

"Ok Eevee now I want you to use tackle one last time."

The Eevee lunged at a nearby rock and smashed it. The young girl smiled as she spoke

"Great job Eevee, feel free to take a rest and explore."

Eevee chirped in response before the girl walked away. It was then Pikachu walked out of the bushes and spoke

"Nice battle!"

The Eevee was startled for a moment before she started speaking

"Thank you. She's training me as I am currently the weakest of the group. All I know is Tackle."

Pikachu smiled warmly as he spoke

"Well that's what Training is for. Heh, where are my manners. I'm Pikachu!"

The Eevee smiled as she spoke

"No real name or do you just prefer Pikachu!"

Pikachu chuckled as he spoke

"Nah just Pikachu! My parents only had like 2 other children besides me. I have an older brother that's a Raichu and a younger sister that's a Pichu. Since that was the case, they didn't need to specifically give us names."

Eevee smiled as she spoke

"That's nice. Although my Trainer calls me Eevee, my real name is Cassandra."

(Flash forward 3 years)

Pikachu and Cassandra had gotten along nicely. In fact, the reason she was by his home in the first place was because her trainer was taking a small break from traveling and rested in a nearby town. In fact, it was during that time that Pikachu and Cassandra fell on love and secretly became mates. When it was time for Cassandra to finally leave town, she explained to her trainer the situation and she was released into the wild to live with Pikachu. They had gotten along perfectly and in fact, she laid an egg. It was only days from hatching.

Now Pikachu was currently picking berries for his mate when he heard a bloodcurdling scream.

It was Cassandra's!

That made Pikachu freeze in terror before immediately scurrying off towards his burrow. When he arrived, his heart practically stopped as he assessed the damage around him.

Blood…was everywhere.

He frantically searched around for the source and saw Cassandra's body against a tree. His eyes widened in horror before he nudged his mate with his paw to try to stir her. And nothing; she was dead. Pikachu wiped his eyes as the tears started falling. Then he remembered something that made his blood run cold;

The egg!

Pikachu practically dove into the burrow and looked around and he nearly screamed in pain when he saw it.

The egg…was smashed!

Pikachu immediately crawled out of the burrow as he fell to his knees as he asked himself what the fuck had happened.

"What's Wrong Runt!"

He immediately turned towards the voice and saw Raichu leaning against a tree as the older sibling smirking at him as he spoke again;

"Can't take care of your woman?"

Pikachu's eyes widened in horror before they narrowed to slits as he lunged at Raichu!

(Flashback end)

Pikachu rubbed away tears. That fight that occurred after that had left him in bad shape. In fact, Professor Oak stumbled across his bleeding body and caught him. So that's actually how he ended up at Oaks lab. That's also why he never returned Dawn's Buneary's feelings of affection. Because unlike most pokemon; Pikachu's mate for life. He can't return her feelings.

Pikachu scoffed in sadness and rage. He doesn't care if Ash would hate him forever for it. He would kill Raichu…for Cassandra, for his unborn child and for destroying his family.