Wink -- Manatsu no Tremolo（真夏のトレモロ）

From YouTube I'd been noticing it for a while but the Labels on the right had been showing 1,990 articles under the Aidoru tag. Well then, I decided (having that little bit of whimsy inside me) that the next article regarding an aidoru wouldn't only be the 1991st article but also an article about an aidoru with a song from the year 1991 . Well, when I think of aidoru from 1991 , my first thought…