Kiyotake, who scored five goals last season, said he was determined to make an early impression with the La Liga side.
"I am proud to be joining a big club like Sevilla," Kiyotake told reporters.
"Getting game time is one objective and then hopefully I will be able to score goals and get assists.
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"I am going to play with players who are at a level I have yet to experience and have to try and nail down a place in the team."
Sevilla finished seventh in La Liga last season but qualified for the Champions League by courtesy of their Europa League triumph in May.
(Reporting by Nivedita Shankar in Bengaluru; Editing by John O'Brien)
