One in seven billion irregular (One-of-a-Kind Irregular) is a Manga/Manhwa/Manhua in (English/Raw) language, Action series, english chapters have been translated and you can read them here. You are reading One in seven billion irregular (One-of-a-Kind Irregular) chapters on www.manga-raw.club, fastest updating comic site. The Summary is
Joo Seung-ho is unable to do virtual reality due to ’congenital hyperimmersion syndrome’, a phenomenon of excessive sensory amplification.
One day, a string of unknown colors comes down to him.
It is the tester of the ‘4th generation VRS’ device!
When he was able to do virtual reality by becoming a tester, he thought for the first time.
That what he caught was a rope made of gold.
When he experienced ‘Lost Sky Online’, commonly referred to as the 4th generation, he realized it.
The ‘congenital hyperimmersion syndrome’ was a poison in the past, but it was actually a blessing.
It’s time to change into a new ‘him’ that was different from his usual self.
[Welcome to the world of the Lost Sky.]