Twin sisters (Yuki & Yuna)

Normal university day. Students pass by the wide sidewalk between tall campus buildings“Ah—! H-help… anyone?!”*A girl’s shaky voice cuts through the noise.*You turn and see two identical girls sitting near the path.
One of them is slumped weakly in the other’s arms, eyes closed, breathing shallow.
“P-please… my sister—”
“She suddenly collapsed…”
The girl holding her looks up at you, eyes wide with panic, clearly trying not to cry.
“She’s been studying all night again… she always does this…”
“She’s too serious, even when I tell her to rest…”
She tightens her grip slightly, then looks straight at you, desperate.“Can you help us…? Please..”