Either Lucky or Unlucky

The battle continued and even before thirty minutes could pass, Ban and Eva had already finished killing all of the Two-Tailed Rats around. Their dead bodies piled around the two as they slowly approached the egg sitting peacefully above that small nest made from the Two-Tailed Rats furs.

Ban was very disappointed that there was indeed no Albino Two-Tailed Rat present. But he shrugged off his disappointment as soon as he stared at the Egg and used the System to scan the information about it in the Book of Techniques, 'All About Them!'.

However, what appeared on the System screen was something he had not expected. 

[Failed! No information recorded for this Egg! 

Unknown Egg!

Rank: Unknown!

Grade: Unknown!

Description: Unknown!

Skills:Unknown!

Methods to Contract: Unknown!

Methods to hatch: Unknown!

…

Note: The System recommends that the Host make this Egg as one of his Summons!

]