Starry Sky Railway: I've Already Said, I'm Not Otto

What to do when you're transported to the world of Honkai Impact 3rd and become the ultimate life form? In this world where everyone wants to use you for research, May can only cling to the treacherous Void Treasury. But... something seems off about her Void Treasury? "Otto, come to my room tonight, there's something good in there~" Hmm... going back to her room to practice mimicry creation is normal. But why is your mimicry constructed first and then understood?? "Otto, why are you going to find the Starry Sky Train? Can't we just enjoy our time together?" Yes, yes, you're not going to find a bunch of pretty girls, and you're here playing with an old man like me, huh... Holy crap! How did you turn into a gray-haired, red-eyed monster?