Complex sentence: His wife was the inspiration for the Boo, a ghost-like enemy in the Mario series, because like boos, she is often shy, but one day, she became very angry at Tezuka spending too much time at work.
Split into simpler sentences: His wife was the inspiration for the Boo, a ghost-like enemy in the Mario series. Like Boos, she is often shy, but one day she became very angry at Tezuka spending too much time at work.