How the Little Brother Who Turned Into a Girl Became His Big Brother's Girlfriend - Vol. 6 Ch. 137

[Reincrop]

After so many random stories using some form of medical condition to "scientifically" explain what happened, and a few mixing in supernatural themes, I genuinely didn't think it'd go this route, but y'know what? Fair enough! Feeding Haruki is perfectly legal!
I jest, I jest, but thanks for the translations so far - now I'm properly curious about the plotline that'll get introduced!