Requested by @BroxNinja and he's 7. Also because BroxNinja wanted to request that, I'll put a bit of Bro x Ninja in this. Ninja is 8. Also pretend everything he says is in Japanese and Bro understands him.

Bro was playing with some toys with Ninja because Ninja was at his place. Then suddenly Bro's mom came in. "Bro, sweetie, we need to go to the hospital. I suddenly remember you have to take your flu shots. I almost forgot!" Bro stiffened hearing these words. "But what about Ninja?" He asked, trying not to sound hella scared. "Uhm, yeah... Ninja, do you wanna go to your home or do you wanna come with us? It might be a good thing for Bro because he doesn't like flu shots." Ninja smiled. "I'll go with you guys." He said. "What did he say?" Bro's mom asked. "He says he will come with us." Bro said. "Oh ok. Then let's go to the car." Bro and Ninja followed Bro's mother to the car. They all sat down and Bro's mother started driving. 

When they were there, they got out and walked to the entrance. "Are you ok Bro?" Ninja asked. Bro, who was practically shaking, nodded. They checked in and went to the waiting room. There, they all three sat down. Bro sat in the middle with his mother on his left and Ninja on his right. Ninja noticed Bro wasn't that tough like he is at school. He hesitated before deciding to grab Bro's hand to comfort him. Bro blushed a tiny bit but didn't pull away. It felt safe to hold Ninja's hand. "Don't tell anyone about this at school!" He whispered in Ninja's ear. Ninja nodded. "I won't." He said. 

Suddenly, the doctor came in. He walked up to Bro. Bro quickly pulled his hand away and blushed a bit more. "Bro, it's your tu- oh you brought a friend? Cool!" He said. Ninja smiled. "Can I come in with you guys?" He asked. The doctor looked at Ninja. "Uh..." he started. "He asks if he can come in." Bro clarified. Ninja nodded. "Oh uh yes of course." The doctor said. The kids and Bro's mom followed the doctor in.

After a checkup it was time for the shots. "Do you wanna sit on my lap?" Bro's mother asked. Bro thought for a bit, then nodded. "Don't tell anyone I still sit on mom's lap when getting a shot!" Bro whispered to Ninja before sitting down on his mom's lap. Ninja nodded and chuckled at Bro. "I won't, trust me. I'm just as scared of shots as you are." He said, sitting down on a chair and looking at Bro. The doctor pulled Bro's pants down and started cleaning his leg. Bro tried his best to stay tough, but he was mentally panicking and wishing to die on the inside. "Bro look at this!" Ninja said, coming up to Bro. He showed Bro a meme on his phone to distract him. Bro laughed a bit then flinched because he felt a sting on his leg. "Ow!" He shouted before looking at what the hell just stung him. The doctor just pulled the shot out and put a bandage on his leg. "Great job Bro." The doctor said. Bro felt tears burning behind his eyes. He then started crying. He couldn't help it. He just had to release the tension and anxiety that had been there in the hospital. Ninja took Bro in a hug. "It's ok to cry..." he said, rubbing Bro's back. "Don't *sniff* tell anyone I *sniff* cried." Bro sobbed. Bro's mom looked at the two, smil8ng. "I won't. I won't tell anyone about it. Even if I could." Ninja reassured him. Bro hugged Ninja tight. 

"You may have a lollipop for for bravery. And your friend may have one too for being to sweet to comfort you." The doctor said. Bro choose a blue lollipop and gave Ninja a purple one. They followed Bro's mom out of the hospital and went into the car. When they were home, Bro and Ninja continued playing. Let's say, their bond grew a bit stronger. And Ninja kept his promise. He didn't tell anyone about what happened in the hospital.