eichi yuu,touhou,patchouli knowledge,remilia scarlet,2girls,blue hair,blush,commentary request,crescent,friends,hair ribbon,hat,holding another's arm,long hair,looking at viewer,mob cap,multiple girls,open mouth,outstretched arm,purple eyes,purple hair,red eyes,ribbon,short hair,smile,striped,striped background,tress ribbon,wings,wrist cuffs