A reference to the Intelligence gacha story in which Yuzuru fights against a masked intruder and loses, then finds out that the intruder was Nagisa. This fit nicely with my previous headcanon of Yuzuru wanting to take NAagisa on but being discouraged by Ibara on the grounds that he would most definitely lose. In the story Yuzuru is heartbroken that he wasn't strong enough to take down an intruder and potentially keep Tori safe, so he's crying while hugging an XL Tori manjuu.