Rider
Rider sat there happily, overjoyed by Sakura's positive response and her happy demenour. Shifting over to allow Sakura to fit in between her and Shirou, she sat there contentedly, basking in Sakura's happiness and ignoring Vanguard's pouting. However, just as things seemed to be going perfectly, Sakura spoke up in a hesitant voice.
"Senpai, your hair... Why is it wet and red…?" she said, obviously concerned.
Rider's face fell at her words, worried that she would once again fall back into her previous state. Fortunately, though, instead of becoming sad once more, Sakura took immediate action, pushing Shirou down into Vanguard's lap before casting a healing spell to fix the wound. Then, she told him that she would need to clean him up. As he lay there, though, Rider noticed Vanguard pluck a gem filled with energy out of his ear, handing it to Shirou and whispering something that she could not understand. Uncertain of what he had done, Rider looked at him suspiciously, wondering whether to speak up and potentially ruin a nice surprise for her master or to keep quiet and question Vanguard when she left.
Deciding to remain silent for the moment, Rider turned to Sakura once more, still smiling.
"Don't worry, he'll be fine", she said, reassuringly.