For those who wants to read the novel in "N.U" the latest mahwa update now is ch 25 so you can go read from V.2 ch 16 at N.U
It's common for those people who become mature to have a fever, i think the seme was malnourished his puberty was fucked up now that he has healthy meals and all he finally grow up and would then lost his baby fat and grow tall lol