The building of anticipation of Zara to tickle Silas built anticipation in me the reader.
Like just tickle him already lol.
But great build up of anticipation and the "how's this going to feel" was well done.
Id love some images of Silas in some of those positions wow!
Part 3 with Rita tickling it seemed like it was a unique/new experience so not on the red/white pill.
But she did end up reacting like she was on the pills with thr orgasms while ticking so I wasn't sure.