After Wearing a Book, I Pampered Five Big Villains - Chapter 1: Dressed as a cannon fodder licking dog

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?

Being a Divine Doctor is very troubling, but being an invincible Divine Doctor is even more so, because there are just too many patients. Tangyu simply couldn't cope with it all!

You take up a student career.

Student career upgrade to lv.7

Acquired skills: primary school knowledge, junior high school knowledge, high school knowledge.

You take the college entrance examination,

You got a perfect score.

Your basic occupation has been upgraded to lv.9, and the job transfer system has been activated.

You change jobs to become a scientist, you gain R&D skills

You use research and development skills to get space fortress construction technology

You use R&D skills to gain starship technology.

You are invincible.

- Description from novelbuddy

The end of the beginning marks the beginning of a new era. Gods and demons were buried in the past, their history had crumbled into dust. As of now, twelve scriptures were passed down.

With the passage of time, during an excavation, a mysterious scroll of star map was unearthed at Egypt. As if carrying its mission, it abruptly appeared, yet abruptly disappeared. During its disappearance, a youth was brought along with it…

- Description from Novelupdates