warui ninja
Warui means bad or mean
In Japanese "pink" is ピンク (pinku) and "ninja" is 忍者 (ninja), so to say "Pink ninja" it is ピンク忍者 (pinku ninja).
Ninja is already Japanese. In English it is 'Shadow warrior', it is equivalent to assassin or secret agent.
Kunoichi.
my family
黒忍者 Kuro ninja
忍者の虎 Ninja no tora
hoko notnay
shinobi- also means ninja
忍者な猫 (ninja na neko) would mean "ninja cat".
I think they were called ninja ( Shinobi) because ninja stole stuff (etc; took) as a thief would.
"This is bad." = "taihen desu."
Josei no ninja o sagashite Improvement: くのいち /ku no i chi/ means 'female ninja' and can be replaced with 'josei no ninja'.