Haru is generally very shy and reserved. At school, she is viewed as eccentric due to her tendency to keep to herself and avoid contact with others as much as possible. She has serious trust issues, finding it difficult to differentiate between who truly values her as a friend, and who merely wants to use her for her family's status. This is due to her past, where not only friends, but adults and teachers would be kind at her just to please her father and smiled at her for their own personal gain. Despite this, Haru is an incredibly kind-hearted girl; she becomes fast friends with all of the Phantom Thieves, and is the only member of the group Ryuji Sakamoto doesn't argue with on a regular basis.