So I got Hogwarts Mystery and I love it! And for sure do I love Bill. But it's quite sad how there is barely any Bill x MC stuff out there and always Charlie x MC. So I thought... let me write a Bill x Reader!

Reminder, this is all for fun so please no hate! I'm only on Year 3, the beginning still so there can be things I will get wrong. (Reader is whatever gender you are)

Bill will probably be OCC (Out Of Character)

You were on the Astromony Tower, sitting on the metal fences. A cigarette dangling from your lips, barely hanging on. You were just relaxing, minding your own business. Suddenly you heard footsteps on the metal staircase so smirked, already knowing who is coming. The one boy who tries to keep you in line.

'William Weasley.' You greet as he appeared, looking unhappy.

'You know the Astromony Tower is off-limits!' He frowned, probably angry since he has to drag you down every week.

'Mind your own business.' You chuckle out while taking the cigarette off your lips.

'I'm a Prefect, this is my job. I can take points from your house!' He informed her for the thousand time this year, and it is only the third month.

You just stare before chuckling, jumping down and walking over. You pat his shoulders, adjusting his collar before tapping the Prefect badge.

'Well, isn't that good for you?' You teasingly asked. You smirk before swiftly snatching his badge off his shirt, leaving a tiny rip. He was quick to shout,

'Hey! Give that back!' He tried to take it but you quickly held it behind you. You would have done it in the air but he could easily take it back that way. He glared, unhappy. 'I don't like your behaviour.'

'But you like me.' You wink before turning and examining the badge. 'Being a Prefect must be hard-'

'It is, so make it easier and give me my badge.' He spoke in a strict voice, holding his hand out.

You just stare at his hand before dropping the badge in it so he was quick to pin it back on his shirt. Just watch as he wiped it clean so roll your eyes. Suddenly an idea hit you so you wrapped your arm around his shoulders. He just glanced with a frown at you.

'If it is so hard, why not come have a drink with me at the Three Broomsticks when we go to Hogsmeade?'

'No.' He simply said. 'I know better then to go get drunk with you. And stop smoking! It's bad for you!' Bill scolded while snatching your cigarette making you yell in anger.

You just let out a groan, having no need to stay here since your cigarette is out so took your leave. You love annoying him. Well... you never knew how else to talk to him. Since the day you two met, which was you being drunk with some friends, you always teased and annoyed him. It would be weird if you suddenly acted nice, he would probably also think your planning something so you just chose to go with teasing him. You know Bill acts different around you, which hurts a bit but you would also be angry if someone like yourself spoke to you. Your surprised he hasn't punched you yet for all the things you say to him.

You were at Hogsmeade. Were smoking, waiting for something to happen. You wanna go to The Three Broomsticks but it was too far away and your not in the mood to go alone. Wanna drink with a friend. But your "friends" are out hanging with each other without you. You sigh as you drop your head head back. But while doing so, you spotted Bill. Just stare at him. He seemed to be waiting for someone... You smirk then sneak behind him. When you looked over his shoulder, saw he held a letter from Emily. She invited him to meet him here... an hour ago. That's quite sad. He's still waiting. He's so focused on finding her he didn't even notice you behind him. You put a fake smirk on and said,

'Dude, she totally set you up.' Bill flinched before turning to meet your eyes.

'She did not.' He defended, holding the letter up.

'Cupcake...' You sigh, snatching the letter before tapping the time on it. 'She said she would meet you an hour ago. Why are you still waiting for such a bitch?' You threw the letter on the floor before stepping on it so he can't take it off the floor.

'...' He stayed silent, just staring at your foot then he sighed. 'I guess it's because this is my first date. Well, was suppose to be.' He said it in such a sad tone, it even made you feel bad.

You couldn't help but stare before smiling, throwing your arm around his shoulders, ruffling his hair making him groan.

'Then let me take you out to The Three Broomsticks!'

'I already told you I don't wanna get drunk!' Bill yelled as you drag him along.

'Then don't. Just watch me get drunk.' You chuckle while doing arm off his shoulders, taking his hand instead. 'Come, I promise it will be fun!'

You ran, dragging him to The Three Broomsticks.

You sat at the table in the corner of the cozy Three Broomsticks. Bill sitting over you, looking uncomfortable at the surroundings.

'You never been here before?' You chuckle while staring.

'Huh?' He quickly looked at you before nodding. 'Never, I don't really have a reason to come here. You seem to be socomfortable here. How much do you come here?'

'A lot!' You laugh out. 'probably three times a month.'

'Why?' You just shrug in reply to his question while opening the menu. 'Okay... How did you discover beer?'

'Asking such personal questions already. I don't drink beer, cupcake. Beer tastes like piss.' You chuckle while slapping the menu close, mumbling, 'They never have anything new.' Then look at Bill and wink. 'I only drink vodka and Firewhiskey.'

'Firewhiskey?' Bill stared, obvious confusion across his face.

'You never had a Firewhiskey before?! Woow, you really are a teenager.'

'So are you!' He reminded her in a shout causing the three people who walked past to nervously glance.

'Well, I act more mature.'

'Drinking and smoking doesn't make you mature.' Bill said while glaring.

'Hey! Two Firewhiskeys!' You yell to the bartender, who just nod then began making it.

'You still haven't answered how you discovered smoking and such.' Bill said, really curious to how a teenager discovers such bad things.

'I always wanted to be cool at school so I asked some teenagers how to be cool, they said smoking and drinking.'

'And you listened?' Bill frowned.

'Well I was a stupid, little brat back then!' You shrugged.

You watch as the waiter put down the Firewhiskeys. Slide Bill's to him. He just nervously swallowed at the drink then looked at you.

'What? Need me to feed it to you?' You did cheek on your palm, watching him closely.

He shook his head then took the drink. He swallowed again before sipping it. He was fast to put it down and cough.

'Woow! I'm hot.'

'You always are.' You shrug with a smirk. Bill just blushed then mumble,

'I meant inside...'

'I know what you meant.' You chuckle while casually sipping your drink. You could feel the hot drink slide down your throat, your body immediately becoming warm. 'It's called FIREwhiskey for a reason, Bill.'

So you both spent your time drinking, chatting, becoming closer with each other. You introduced Bill to many different drinks. Offered him a cigarette but he declined with a glare.

Now were both walking back to Hogwarts. You quickly did the cigarette from lips and let out a big yawn.

'Tired?' Bill mumbled, his hair messy so laugh.

'Your hair.' You pat it down his shoulder-lenght hair to get it somewhat decent again with a smile then asked. 'So? How was your first date?'

'Well... it started awkward and weird, but then it became fun.' He smiled. 'I wish it never ended.

'Well, we can always go on more dates.'

'Really?!' He asked, excitement shining in his eyes causing you to laugh.

You just nod while walking inside the castle. He was quick to follow. He insisted on walking you to your house door. BOth talked and laughed on the way there. When at the door, he thanked you for cheering him up when Emily played him before saying bye and walking away. All you did was wave bye, smiling at him. That was probably the best day of your life.