Pandora Box Apocalypse

In the year 2096, Earth's advancement in technology is at the Apex. People are now spending their holiday in Moon and Mars. Research is on-going on how to tap energy directly from inside the planet Sun. Some explorers were sent into the Universe for resources and possible opportunity. Advance Research Lab (ARL) was set up close to the Planet Sun successfully. with materials and devices that can withstand the temperature of the Sun. It's purpose is to tap energy directly from the Sun and transfer it to the earth. The transfer devices and protocol was successfully established and activated. It takes the fraction of a second to send energy and materials to Earth as the transfer is automatic.

3 young explorers patrolling the Universe accidentally came upon a mysterious asteroid belt. Blue radiance seems to be emanating from it. However, it was sealed with a blue diamond colour seal that Vibrate periodically. Out of stupidity and dangerous courage, they directed their space craft to hit it while also firing a bomb at it. The result came immediately as the seal was shattered. A big box come out of the asteroid belt and moved with speed until it hit ARL. The box was automatically transferred to Earth. It stopped and exploded.

For 3 whole days there were thunderstorms everywhere. One tenth of the Earth's population died. When everything returned to normal, all the unoccupied forest were habited by mysteriously powerful beast with magical powers and skills while there are dungeons everywhere clearly marked with letter(s) that clearly showed their rating from F level dungeons been the lowest to XXXXX been the highest known for now. (G,F,E,D,C,B,A,S,SS,SSS,SSSS,SSSSS,X,XX,,XXX,XXXX,XXXXX,) etc.

Whenever you kill a monster, it will leave behind different items. Once you notice find a skill book, you press it to your chest, it will turn to light which will enter your chest. Then you'll have the skill and will now be connected to Pandora System.