Thank you <3. The scene you're talking about is a repeatable during the evening when Yuto & Kord are both in the gym at the same time (Action -> Join conversation -> Choose squat when asked what exercise). For Lisa to let Kord help her, from the top of my head, her favor to him has to be at least 50, after the turning point their texts also become a little different to better show her corruption. There's still much to be implemented in those interactions as they're quite early, including all other rooms and also when Yuto isn't around. So, for now, you'll find that the action button is usually lacking in options.