Sucked in the game with an skill “REDO”

A man was playing a computer in his dark room.

[ You have completed the game, but it is not the true end of the game. Only

47% of the game you have completed.]
[Next / Back]

I clicked the next button so that I could see the other message.
[Do you want to achieve the true end?]
[Yes / No] I immediately press the yes button. 

And then there was a flashing light coming from the computer, and I got alarmed, so I hurriedly ran outside my room. But I tripped because my room was so messy.

"FUCK , I'm so unlucky" Then the light was all over my room

As I woke up, I found that I was not in my room anymore but in a big cave based on my surroundings.
After I observed my surroundings, I heard a faint sound.

*DING*
[ You obtain a SSS-Class skill "REDO"]

"SERIOUSLY!!! WHAT'S HAPPENING RIGHT NOW??!!!"

(N/T: Photo not mine)