Akadora

Also called: 赤ドラ, red 5

Riichi 'red five' tiles — each red 5 always counts as 1 han.

Akadora are special red-printed copies of the 5 tile in each suit. Most modern rulesets include one akadora 5m, one 5p, and one 5s — three total. Every akadora in your winning hand counts as 1 han, regardless of the regular dora indicator. They're 'always-on' dora.

Related terms

Dora
Riichi bonus tile — each copy in your hand adds 1 han.
Ura dora
Riichi-only: extra dora revealed only if you declared riichi and won.
Han
Riichi scoring unit — counts each yaku in your hand.