I know about the Fanbox thing since long ago, what I am asking is about the exact and precise timing of the situation and for what we have seen on the chapters of the main story it is strongly suggested that Karasuma and Takanashi fucked even before Ochiai and Sawatari kissed for the first time.
I already know of that thing since a fair share of time, so you linking to that went just according to keikaku, although truth be told I was thinking more of this one:
https://pawoo.net/@teriyama/109329312998260333
Oh fuck, she is using the same jacket as Sera The Porn Gangster from Aohada Kyonyuu to Kuso Bocchi, nice reference there, Zyugoya, if only you could continue the story of Aohada instead of putting it on an eternal hiatus.