Sariel x Hanahaki reader (Angst to fluff)

                                    

                                          
First oneshot of the book and I'm doing my comfort character, Sariel! If he's a bit OOC here, I'm sorry, I'm still very new to writing fanfictions of anything. 
                          
CW: A teeny tiny mention of blood, Hanahaki
                          
{Y/N's POV}
                          
It's currently the middle of the Holy War. I'm traveling with big sister Elizabeth and the Seven Deadly Sins. Well, what's left of them anyway. Meliodas was trying to become the Demon King to free both him and Big Sister of their curse, and Ban was in Purgatory trying to retrieve Meliodas's emotions. I was reminiscing on the past, thinking about life in the Celestial Realm. I was very close to the Four Archangels, and had developed a close bond and a crush on Sariel, the wielder of the Tornado Grace. Although the rest of the Goddess race had been sealed away 3,000 years ago, somehow I wasn't. I was thinking about Sariel when Big Sister came over to my seat. 
                          
"(Y/N), we're here at Liones now," she said with a small smile. I nodded and said, "Ok, give me a sec to grab my coat." Big Sister nodded, and she allowed me to go. I ran off to my room, nearly crying. I knew I needed to stop thinking of Sariel. It just made my death loom nearer and nearer. But... he's so perfect, how can I not think about him?
                          
Flashback
                          
"Hey (Y/N)," said Sariel. He had just gotten back from a patrol. He always liked to check in on me whenever he could. I was in the garden, with my legs pulled up against my chest, my arms hugging my legs, and my head on my knees. "Bad day, huh?" he asked. All I could do was let out a muffled sob in response. He then walked over to me and asked what happened. I hesitantly explained everything that had gone wrong that day, from me injuring myself during training to the shop running out of apples. He sat there and listened, letting out hums to show that he was listening. After I finished ranting, he simply pulled me close to him, allowing my head to rest on his lap. 
                          
"D-don't tell anyone about this, ok?" he stammered, his tsundere side showing. He was blushing a little bit, but I was too tired to notice. I nodded and fell asleep on his lap.
                          
{Sariel's POV}
                          
I can't believe I just did that! Normally, I don't ever show my softer side to anyone, so why is it any different with (Y/N)? 
                          
As I felt her breathing slow, I flew her back inside her house and laid her on her bed. I didn't want her to be uncomfortable, but I still had work to do. Before I left, I took one last glance at her  before leaving. 'She looks so peaceful when she sleeps,' I thought to myself. 'Wait, what? Snap out of it, Sariel! You still have places to be and things to do." With that last thought, I took my leave.
                          
Flashback end
                          
{(Y/N)'s POV}
                          
I found myself coughing flower petals on the floor, a few of them clumped together, others splattered with blood. I knew I had hanahaki disease. I've had it for over a year now. I've been very lucky with the disease, but it seems I'm about to reach the stage where I cough out full flowers. I stare at the flower petals scattered around the room's floor, then sighed to myself and started tidying up the mess. After I finished, I grabbed my coat and went back to Big Sister. 
                          
{Timeskip brought to you by Toko Fukawa simping over Byakuya Togami}
                          
I was still processing that Ludociel took over Princess Margret's body. I do understand why he did it, but that doesn't make it any less surprising. He and Big Sister made a pledge to form an alliance between the Sins and Stigma, to prevent Meliodas from being the Demon King. To top it off, Sariel and Tarmiel are both here. I looked over to where they're sitting, and I can feel my throat start to itch. Sariel probably didn't recognize me, which made the tingly feeling get more annoying. I excused myself to go to the palace roof, thinking I wouldn't have any company. When I reached the rooftop, I began to break down. I coughed for about 5 minutes straight, and by the time I was done, the area I was in was dusted with flowers. Not just petals, but full flowers, splattered with blood. It seemed I had nearly met the end of my life. I had two options now: Confess to Sariel and hope he returns my feelings, or wait and die. I wasn't ready to die, but I wasn't ready to confess either. Ultimately, I decided to just suck it up and tell him. I just needed the right moment. Unbeknownst to me, my sudden leave at dinner had concerned a certain blue-haired archangel...
                          
{Sariel's POV} 
                          
As Ludociel was talking with Lady Elizabeth, I had decided to look around the crowd. (Y/N) appeared to be there, with the same silver hair with (H/C) tips. I saw her take a quick glance at me, and I slightly smiled. It seemed like she had remembered me, and I was glad. I mean, I do like her after all. I'm not completely willing to confess to her, but I might. I would just need to find the right time to approach her.
                          
During the dinner, I watched (Y/N) excuse herself from her table to go fly off to the roof. 
"Are you going after her?" Tarmiel asked. He noticed her as well, and he was the only one who knew about my crush on her. I think he saw this as an opportunity to get me to talk to her again. 
"Of course," I said, getting ready to leave. "I need to make sure she's ok." 
"If that's what you say," Tarmiel shrugged. I felt my cheeks heat up and I quickly flew towards where (Y/N) had gone. 
                          
When I got there, she was coughing. A lot. She was surrounded by flowers, and the last cough of hers produced another flower. I could see the tears glistening on her cheek in the moonlight. I immediately realized what it was: Hanahaki. I didn't know who she liked, but it stung a bit. I carefully approached her. 
                          
"Hey (Y/N)," I stated, looking down at her collapsed state. "I take it you have Hanahaki. Who gave it to you?"
                          
{(Y/N)'s POV} 
                          
Hearing those words from Sariel made me want to cry again. I wanted to seem strong, but I knew that facade wouldn't work. I didn't know what to say, so I just looked at him, mouth open ajar. I finally got the courage to mumble out "Y-you, Sariel. I-I love you..." 
                          
At that point, tears had glistened my eyes once again, and there was nothing I could do to stop them from falling. I tried to keep myself as quiet as posisble, but that didn't matter. Sariel could still see my face. "I-I'm sorry for not telling you sooner..." I said, still wondering if this would cure me or kill me...
                          
The next thing I heard changed the course of my life. 
                          
"I love you too, (Y/N)..."
                          
{Sariel's POV} 
                          
Her face when I told her that I loved her back was filled with relief. She looked so grateful for the love I was giving to her. I realized the flowers she had coughed out were disappearing. 
                          
"Looks like you're cured, huh," I stated. Even though it didn't sound like I cared that much, it was actually the opposite. No one else needed to know that. Only (Y/N). She was the only person I would show this side of me to. I had always wanted to kiss (Y/N), and now seemed the perfect time to do it. My heart began to pound, I leaned towards her, and when the last flower disappeared...
                          
.
                          
.
                          
.
                          
I kissed her. 
                          
A/N: Woo, first chapter done! Again, sorry if there was any OOCness, like I said, this is my first time writing a fanfiction, but I think it actually turned out ok. Also about my schedule for posting, it'll probably be Monday-Wednesday-Friday. At the time of posting this, it's 1:45 am, but this doesn't define the precise time, just when you should expect me to update. 
                          
Cya in the next chapter, my peeps. 
                          
Edit: I edited it because I reread it and it was cringy and I forgot a couple things.