Complex sentence: This tour is described as a culmination of their activities in Japan thus far and will kick off in Osaka Dome on February 17,2018 and ended in Tokyo Dome on February 28,2018.
Split into simpler sentences: This tour is described as a culmination of their activities in Japan thus far. The tour will kick off in Osaka Dome on February 17,2018 and ended in Tokyo Dome on February 28,2018.