If it makes you feel better I was making the Exact same mistake and spent longer than I should have trying to figure out where the non-existent item that'd let me avoid it wasOkay, I don't particularly care about whether AI has been used or not, but
Is a virgin run possible here? I'm about twenty minutes in, and putting key items in where I assume they are supposed to go leads to a forced sex scene. Not putting a... pulsating red thing into where it can be placed leads to what looks like a blowjob scene, so I guess that's closer to a virgin completion, but I thought I'd ask around.
Update: Never mind, I figured it out. "Cutscenes" aren't actually cutscenes, and Chiyo can move during a segment that I thought she was scripted to stay still.