Step 1, watch a Raskval male be assaulted by a gray goo, he protests about her inability to be bred, while wearing goo armor
Step 2, Raskval female births while steel is wearing goo armor
Step 3, Nova wishes to try to be pregnant. If steel humors, Nova tries but can't figure out the form. If not, chain ends.
Step 3.5, If Steele is pregnant and willing, Nova explores Steele's body and tries to mimic it. And fails. Steele can encourage nova to keep trying, laugh, or discourage Nova to end the chain.
Step 4, if pregnant Sera is in the crew and "showing", Nova sneaks in and attacks her while Steele sleeps. She protests and either Steele rushes to check on the commotion or wakes up.
Step 5, after Steele has met dr. Lessau and step 4 and after sleeping in the ship one more time, and Shekka quest is started or further, evidence of Sera messing with Steele's terminal, but you don't know what she did.
Step 6, two weeks have to pass from step 5. Nova now has a tiny chance of getting pregnant any time it is exposed to Steele's cum.
Step 7, 70 days after, Nova starts showing pregnant successfully. (Secretly is pregnant) + belly rating to steele wearing pregnant Nova
Step x, steele confronts nova about making clothing all appear pregnant, nova can't stop self from pregnancy mimic because actually is pregnant. Steele discovers sera colluded with Anno and Dr. Lessau to help Nova get pregnant. Steele's dna with random mutations based on a random seed from Nova's networked structure.
Step 8, Nova is heavily pregnant. -4 armor (can go negative? Is protecting baby or something) ++ belly rating
Step 9, 200 days, Nova births. Full blood "gray goo enhanced" version of whatever Steele was is born.
Step y, Dr Lessau explains that modifications to Nova allow the mass to create a womb, and that some of the genetic changes done by the goo modification allow the goo mass to interface with the organic body, making offspring a human gray goo hybrid.
Step z, repeats of nova pregnancy is possible.