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is a Japanese shōnen manga written by Yūsei Matsui , following the daily lives of an all-powerful alien teacher and his students dedicated to the task of assassinating him to prevent Earth from being destroyed .
 Yūsei Matsui
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yūsei Matsui