The official details of this crossover are still unknown at this time, however looking at previous crossovers can give us a glimpse into the potential timeline for the event.
Estimated Timeline
This announcement comes just 6 months after Yandere Simulator announced a crossover with another H-game known as ProjectQT.
Based on the timing of the previous announcement, we could potentially see a Yandere Event for BITC within the next 3 months.
Other Info / Sources
An announcement was posted on a Chinese Facebook fan page for an H-game website.
The translation from Facebook reads:
[announcement][opie in the city]
City’s Opie x sickel simulator furious cross-border collaboration teaser!
Seniors, look at me doing great ♥
Hey, senior, who are you talking to?
Senior, who is this ugly bitch?
Seniors… long?
BITC (or “Oppai” in the City), is a water gun shooting game where players can shoot girls with water guns. Of course, this game also features 18+ features that we can’t discuss or show here.