Comment:

Diego Forlan (ディエゴ・フォルラン), whose name is pronounced as "弗兰" (Fu Lan, "フラン" ) in China. Which is similar to Flandre's nickname "Flan" (芙兰, also spells as Fu Lan). So Flandre is often got related to Diego Forlan in Chinese Touhou fandom with many jokes.