(Note- MAKE SURE you have the Extra-Large Sandwich for this event- haven’t tested this thoroughly, but it does make this easier) Seriously, it’s really easy to scare her off and get roped into another ending, so stick to just these options: Instead, make sure you pick ONLY THESE OPTIONS. Yuri, ironically, doesn’t rely on poem points to romance.
My favorite girl, and my favorite ending outside of the Harem Ending.