Complex sentence: In chapter 63, (titled: Ave Maria) Len finally realizes his true feelings for Kahoko that seems to be confusing for him for a long time, he realizes that his feelings for her were "love".
Split into simpler sentences: In chapter 63, (titled: Ave Maria) Len finally realizes his true feelings for Kahoko. It seems that his feelings were confusing for him for a long time, but then he realizes that his feelings for her were "love".