Bonouri and Laylia are lovers, and Bonouri is a member of the Altora Zonai, a group of people who fight monsters that endanger the human race. Bonouri is actually part elf, though it's more mental than physical. Bonouri and Laylia met when he saved her from getting eaten by a werewolf, and they fell in love and she got pregnant (typical.) They aren't supposed to be lovers though, because no one in the Altora Zonai can fall in love. The Council doesn't want them to, in case a monster kills their family and the agent is so upset he gets distracted and killed. This is why Bonouri and Laylia are in the Room of Confusa, which is somewhere the Council put people who are in trouble. The Room of Confusa is meant to confuse and distress people, which makes them want out more, hence they do whatever the Council wants them to do.