Board Thread:Naruto Discussions/@comment-39491274-20190604201820/@comment-3568954-20190605224457

you are mistaken in your definition of Sensei. Sensei does't just mean teacher. it has become synonymous with a teacher but thats not the only definition. the word is an honorific term shared in Chinese and Japanese honorifics that is translated as "person born before another" or "one who comes before". Kakashi is team 7s Sensei because he was born before them and has come before them in the shinobi world