Complex sentence: They claim they did this to determine the nature of their sister's friends and to test Rito's affection for Lala.Acording to volume 17 of to love ru darkness they are 14 years old.
Split into simpler sentences: They claim they did this to determine the nature of their sister's friends and to test Rito's affection for Lala. According to volume 17 of to love ru darkness they are 14 years old.