forehead mark

Tsunade (Naruto) by Drawink

Tsunade (Naruto) by Rocner

Katsuyu, Tsunade (Naruto) by Nakge06

Matsumoto Rangiku, Tsunade (Bleach, Naruto) by K 0art

Shizune, Tsunade (Bleach, Naruto) by Flipzrok

Tsunade (Naruto) by Inker Comics