Word count: 429w

Prompt: ALSO KYUNGSOO PLAYFULLY KICKS THEM SOMETIMES but one of them learns hapkido from uncle baekhyun lmao so kyungsoo doesn't play with her v often hehe

'DAAAAAAAAAAAAAAADDY!' Soojung's voice shrills throughout their house, and Jongin groans. He's in his study, the only place in the whole house where it's quiet enough for him to think, but even then the pitch of his daughter's voice manages to rattle his eardrums. 'DADDY! DAAAAAADDY!'

'Coming, princess,' Jongin calls. He rolls his chair away from his desk and makes his way to Soojung and Jinri's room, expecting to find his youngest tearfully trying to fight Jinri off. He begins to form a lecture in his mind, beginning with a stern Now Jinri, I know you're bigger than her, but she's still your little sister, so you can't be mean to her, alright? and he only has those words thought out in his head, because he doesn't think any other situation was probable, until he pushes the door open and finds -

'Kyungsoo?' Jongin's eyes bug out at the sight before him. All three of his daughters look perfectly content, Soojung's eyes are dry and Jinri isn't red in the face with fury. Sunyoung even has a smile on her face, which would be considered normal, if it weren't for the person she was sitting on. 'How did you...'

Kyungsoo seems to have fallen flat on his face, carpet burns startlingly evident on his skin. He looks dazed and a little bit confused and in pain, and his eldest daughter is seated, cross legged, on his back. 'Look, Daddy! Daddy look! Sunyoung unnie beat Papa!' Soojung jumps excitedly into her father's arms, and Jongin automatically hoists her up and carries her.

'Yeah! Daddy see, I beat Papa!' Sunyoung leaps off Kyungsoo's back, rushing over to hug Jongin. She links her arms behind his thighs and smiles up at him, but Jongin's too bewildered to smile back.

'Um - how did this -'

'Papa tried to kick me, see, Daddy! He almost got me too, but Sunyoung unnie got him first! She went - went BAM like this, right? And then she went POW and Papa was all like HEY and then - and then she booped him one more time and he fell and she beat her!' Jinri says. She hops in place as she relays the story, and Soojung nods along. Jongin bursts into laughter.

'Kyungsoo? Is this true?'
He groans.
'She's like, seven. You're like. Old.'
He groans some more.

Jongin looks down at Sunyoung and pats her on the head. 'Good job, princess. What's that move called?' he asks.

'Hapkido!'

'Hap-' Kyungsoo manages to say, and then it all falls into place for him. 'Who taught you that?'

Sunyoung beams. 'Uncle Baekhyun!'

Kyungsoo doesn't try to kick her again.