Complex sentence: Okazaki was one of the rare manga artists to successfully capture the mentality of the young people who lived during this period in a realistic manner, and was able to portray the difficulties of living amidst this particular period.
Split into simpler sentences: Okazaki was one of the rare manga artists to successfully capture the mentality of the young people who lived during this period in a realistic manner. In addition, she was also able to portray the difficulties of living amidst this particular period.