She asks him to eat her out

"Would you... eat me out, senpai?"

"As you wish, Lady Sakura," Shirou said as he slide back towards Sakura's pussy. Sakura parted her legs to let Shirou reach her. Shirou positioned his head next to it and put his lips to the lips of her vagina. With his tongue, he reached out and felt the folds of her pussy. Sakura could feel her master's lips and tongue upon her. She moaned as Shirou's tongue tickled against the walls of her pussy. The taste of Sakura's juices were pleasant.

"Thank you for your juices, Lady Sakura," Shirou tried to say, though his voice was slightly muffled. As he continued to lick Sakura, he could feel her thighs against his head. It felt like they were pulling him in or keeping him there. Shirou could feel them shaking in pleasure as he continued. Shirou pulled back a bit and licked Sakura's clit.

After a few moments, Sakura cried out. "I'm cumminngg!" Her back arched as she cried out in pleasure. Shirou could feel her body throbbing as she came.

After she came, Shirou pulled back. "Your command, Lady Sakura?"