i actually have an elaborate scenario in mind about this set in the 2nd year of ES timeline (a few months after SS) that would make 2 chapters min if i had the energy to write a fic again :,D generally speaking tho, i think ibara would be the one to initiate it (because yuzuru would rather d!e than act on his desires and scare ibara away lol) and it would definitely be rushed the first time, somewhere in ES building. i like to imagine that yuzuru would be lowkey emotionally fucked up after it while ibara is more concerned with deleting the cctv footage. also 2 very important things are 1. they woudn't kiss until their 2nd time and 2. ibara would be yuzuru's first but yuzuru wouldn't be ibara's first :,)