Marvel Rare Pair Bingo Round 2

Soul enemies

"Soul enemies"

Ship: Brock Rumlow X Sinthea Schmidt (Love).
Word count: 564 words.
Rating: Teen.
Square: N3 "Free".
Summary: Is Brock against his number one enemy.
Warnings/Tags: Pets.
Fandom: Marvel, Captain America.
A/N: This is my entry to the​ Marvel Rare Pair Bingo Round 2 2023. Annie MRP-066.
Also, my entry to multifandom-flash, Annie-4009 & square 3: Free.

Sinthea went out to buy some things when she was on her way back home. She found a small dog trembling and scared. Without hesitation, she took it and decided to take it with her.

When she arrived home, she left the dog in the room she shared with Brock and went to take a shower without imagining the big problem that would begin in the next few minutes and would last several weeks.

As soon as Brock opened his eyes, he looked for Sin with his eyes; however, the first thing he found was the little dog. Brock raised his eyebrows in confusion; he did not remember that they had one.

The dog turned to see him as soon as he noticed the movement. He tried to get closer but stopped when he noticed Brock staring at him.

"Why is there a rat in my room?" Brock mumbled, and that's when the little dog came closer to bite him.

"Leave it alone!" Sin yelled at him, pulling the puppy away from him.

"That rat attacked me," Brock defended himself.

"Sin left the room along with the dog, though Brock could be sure the dog was taunting him.

"He's a rat," Brock muttered, knowing she wouldn't hear him.

As the days went by, the fights between the dog Duke and Brock increased; it seemed that both wanted to have all of Sinthea's attention.

But the fight got bigger the day Brock was going to prepare himself some delicious and juicy steaks. Sin was on a mission.

Brock took out of the refrigerator the steaks he had been marinating for several days, finished seasoning and cooking them, and left them for a moment on the kitchen counter.

When he returned, the only thing he found was a trail that led him directly to the culprit. This fact was the straw that broke the camel's back. The fights started to become more frequent, but Sinthea always came to save Duke.

The next time she went on a mission, something different happened. While Brock was chasing Duke "after he had stolen and destroyed one of his favorite boots" to take his right boot, Duke crashed into a piece of furniture, and Sinthea's favorite vase fell, shattering into pieces.

Hearing the crash, Duke stopped and turned to see the chaos he had caused. Brock was standing there, pale, if Sinthea noticed...

Duke let go of the boot; they both knew they were in trouble. Brock quickly left the house; he had to get another vase any way he could. After scouring about ten stores, he found one exactly like it, so he bought it.

"I'm not doing it for you, rat; I'm doing it for me. I know you'll say I broke it to frame you, when we both know it was an accident, so nothing happened," Brock said when he returned and showed the replacement vase to Duke.

Duke only wagged his tail; a few hours later, he approached Brock and left two cookies nearby. Brock interpreted that gesture as a peace offering and slowly raised his hand and reached out to pet his head.

Sinthea arrived just to see Brock pet him.

"Wow, you're already friends," she commented.

"We understood that we have to live together, so I won't try to kick him out anymore, and Duke will leave my stuff alone," Brock said.