Complex sentence: On February 8,2006, Suzuki released her sixth Avex single, "Fantastic", which was used as third opening theme of the TV anime series "Blackjack", making this the first time that one of her songs was used in an anime.
Split into simpler sentences: On February 8,2006, Suzuki released her single "Fantastic", which was used as third opening theme of the TV anime series "Blackjack". This was the first time that one of her songs was used in an anime.