Annoying younger sister and high school introduced in the same chapter. It's like the editor spoke to them before this chapter was originally released.
I might check out more by the author of the original story. I was worried when the parasites were literal, but the current development still maintains the themes of isolation, compulsive disorders, and free will while also being decent soft sci-fi.
Glad MC fought back on can getting his dick wet, that shit never ends well in manga. Still waiting on gay bully's multi-bubble confessional double spread before they bang.