The Heart Principle
The Heart PrincipleHelen HoangThe Kiss Quotient, book 3
Characters in The Heart Principle
2 characters, main characters first.Main characters
Anna Sun
A classically trained violinist navigating burnout, family caretaking, and a possible autism diagnosis.
Quan Diep
A tattooed, motorcycle-riding clothing-company CEO whose casual arrangement with Anna turns into something deeper; he first appeared as a side character in Hoang's earlier books.