No, I think the story is just a riddle or a poem which tells Taekjoo where whatever he looking for is, that's how he found out in the latest chapter where it is, not only that I think there will be romance or smth like that in the end (I hope tho) but that's about it, zhenya just told him probably because he had fun with Taekjoo and since he is kind a smart guy and really wanted to find out the truth, zhenya told him but ofc he left Taekjoo to die anyway
Either way if zhenya does end up being immortal, bro that would be awsome but this manga doesn't have supernatural tags so
And no, in the little story or poem zhenya told Taekjoo, he said that there was this girl names anastasia who died and blah blah blah, if you really visit that chapter I think you will get it
Is Zhenya supposed to be both the immortal and Anastasia? Like was the weapons project to create super soldiers or something? I’m so lost