Why do ラ (ra), リ (ri), ル (ru), レ (re) and ロ (ro) sometimes sound like they begin with a /d/ sound? And why are they used sometimes for an /l/ sound?
What is the difference between とうも (doumo) and ありがとう (arigatou)?
Introduction: Yuuki Takanishi
How many letters (or symbols) are in the Japanese language?