One

Kim Sumin most likely spending her time at the ballet studio. Till one day her friends were playing with Airdrop and Sumin wants to try it out.

"This one is opening his airdrop." Without further thinking, she airdrop it towards the unknown person.

Both of them were always sending photos through Airdrop for a long time without knowing who is the sender.

Sumin: I want to see you...

Will they accept each other after knowing their appearance?

"I think I love you."