My life is a YES or NO game?!

Just a normal life, after graduated we moved out, find a job. Yes, thats what I do. After graduated, I find a job, move out. Just live a happy life. How can life get any better than living like this? This is a whole happiness to me. Doing whatever I want without anyone stopping me, this is heaven to me. But what a misfortune, thinking of going to some forbidden coffee shop near the traffic. Trying to cross the road and ended up getting hit by a truck kun. Truck kun always ruin everything! But... There's something weird happening right now. I woke up in a hospital bed.. but what the heck is this?!

'Welcome to the game!'

'Please insert your name below.'
_______________________________

What is this? Should I just write my name? I tap the line. It showed a keyboard. This looks like I travels time but I don't! I write my name,

"R, I, L, E, Y, S."

should I write my full name?

"A, R, M, S, T, R, O, N, G."

'Click here if confirmed'
CONFIRMED

I tap it. Suddenly someone knock on the door. Wait there is an option..

'YES: Let him in.'
'NO: Do tantrum.'

its.. a yes or no option? Of course the option yes? Right? I tap the first option. Suddenly a tall gap man comes into my room. But still, who is he? Suddenly there is a notification in front of me.

'+1 new character'
'New character obtained!'

Just... What the heck is happening?