Complex sentence: Most of the time he is away searching for his missing wife, who apparently is so bad with directions she got lost while running errands and is now lost wandering Japan, but periodically returns to Wagnaria to check up on things and bring back souvenirs.
Split into simpler sentences: Most of the time he is away searching for his missing wife, who apparently is so bad with directions she got lost while running errands and is now lost wandering Japan. He periodically returns to Wagnaria to check up on things and bring back souvenirs.