Author: Ms.Butterfly
Book 1: His Secret Agent Pretend Wife
Book 2: His Secret Agent Wife
Book 3: His Secret Agent Bride To Be
Book 4: My Secret Agent Boss
Book 5: I'm Her Secret Agent Husband [One-Shot]
Book 6: He's A Secret Agent and He's Mine
Book 7: His Secret Agent pretend Girlfriend
Book 8: He's My Secret Agent Brother and Soon To Be Husband
Book 9: He's My Secret Agent Fake Husband
Book 10: He's My Secret Agent Husband
Book 11: His Secret Agent Spy Best friend [One-Shot]
~Click the external link (Link yan ni author)