I'm not normally the biggest fan of Reimu but this really makes my heart clinch for the girl, especially given how it's basically one large prank on her.
...Reimu?That's why... I..beg..you... *sob**creak*Eirin...I beg you...
You are the only one I can rely on......there's nothing I can...
nothing I can do...To save Cirno... *sob*