If you don't like, don't read. (Includes half-incest - due to Apollo and Trucy being half-siblings and the reader being Trucy's full sibling)

Also, set after Phoenix finally tells Apollo and Trucy are half-siblings

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Stupid! Bad, (Y/n), bad! This is not right! You shouldn't be thinking of him like this! Bad! I continued to scold myself banging my head on the desk. Before I had just thought of Apollo as a brother but I then realised that I felt differently towards him that I did with Trucy. Fuck me right now world! I continued to bang my head on the desk in frustration. Why? Why did we have to be related?!

"(Y/n), are you okay?"

"I'm great actually! Just thinking about something."

"You were mumbling to yourself again. Which means you're not okay. What is it?"

"I-I can't tell you, Trucy. You may be my sister but I still can't tell you," I replied trying to ignore the feeling in my head.

"Why?"

"Because it's something personal."

"But, I'm your sister! We made a pact to tell each other everything, remember?"

"I know but you'll just think of me strangely and I'll probably get a slap in the face from several people," I replied shaking slightly at the thought.

"No one would slap you, (Y/n)," Trucy said hugging me.

"I know you wouldn't but I meant in society's eyes."

"What do you mean by that?"

This question got me. I didn't want to tell her the truth because it would probably creep her out seeing as Apollo was her half-brother too, "Trucy, i-its immoral. That's why I can't tell you."

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After that day, my feelings for Apollo kept getting stronger to the point where I couldn't even look him in the eye. This eventually led to, "I'm sorry but I'll have to take a leave."

"(Y/n)? What do you mean? You can't just leave?!"

"Yes, I can. I'm not a child anymore, I need my own life. I can't stay cooped up in the Agency forever," I replied.

"Why?"

"All I can say is that is something I have to settle myself."

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Even after abandoning the Agency, I still couldn't get my true feelings towards Apollo to go away. I eventually decided to just return, seeing as avoiding him wasn't doing anything.

"(Y/n)! You're back!"

"Y-Yeah, I am," I replied returning Trucy's hug.

"(Y/n), can I talk to you please?"

"Of course you can, Apollo."

Trucy hopped out of the Agency, sensing that Apollo meant in private. Apollo walked up to me before pinning me to the wall, "(Y/n), I know this is immoral but, I can't help it."

"What do you-" I was cut off when he pinned my wrists above my head and kissed me, quite passionately I might add. I immediately kissed back, not sure whether it was a dream or not. This apparently gave him the message and he let go of my wrists to hold my hips. My arms flew around his neck and I tangled my hands in his hair. It eventually got to the point where he was sitting on the sofa and I was straddling him. In the midst of the fierce make-out session, we didn't hear the door opening.

MEANWHILE - ATHENA'S POV

"Boss, how much investigating are we doing?"

"I thought you were having fun, Athena."

"I was but I'm bored now," I whined.

He sighed and rolled his eyes, "Okay, you can go back to the Agency with Trucy."

Trucy walked up to me and we left the crime scene walking back to the Agency. 

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I was the first to go in and what I saw was something I wasn't expecting: (Y/n) and Apollo on the middle of an extremely passionate make-out session. What the?! Surely this has to be immoral, right? Do neither of them care?!

I cleared my throat to get the attention.

"Athena! you're back early! Mr Wright isn't with you is he?" Apollo shouted.

"No, but Trucy is! Also, what were you two doing?"

"Nothing!" they both replied at the same time.

"Yeah, I don't believe that. I caught you two in the middle of a make-out session. I won't judge though! Each to their own. But I don't think it would work out, Mr Wright won't like it."

"I wouldn't like what, Athena?"

"We were talking about food! Nothing else! Food, weren't we, Apollo?" (Y/n) said nudging Apollo in the arm, "Yep! Talking about food!"

"I caught them in the middle of a make-out session, Mr Wright!" I noticed (Y/n)'s face turn into one of rage, "Athena! You better start running right now!"

YOUR POV

"You know, (Y/n), you may technically be related but not fully. I wouldn't really have a problem with you and Apollo being together if you wanted to."

"Really? But isn't it still technically immoral?"

"We're the only ones that know. Also, it's not like you have the same surname. It could still be buyable by society that you're not related."

"Thank you!" I squeaked hugging him, "You're sure you're okay with it?"

"Yes, I'm sure."

"You want it right, Apollo?"

"Yes. I don't care if we're related, I love you."

"And I love you, Apollo."