the world of lineage ii has known many many things in its long long life. and yet there are so much more mysteries out there that wait to be tackled. naturally, such things occupy curious minds of aden inhabitants. most knowledge-thirsty ones turned out to be yumi from archaic laboratory and tully from steel citadel. it should be noted that each of them is very much aware of the other and it can hardly be said they appreciate another inquisitive mind to rival with, that's why their relationship is a bit tense. to be more precise, each of them constantly tries to outwit the other with the experiments they conduct, coming up every time with more and more unusual things to test. here you can find the results of what they do.