Kyle von Albert (20 years old) Public Face: The Second Prince of the Albert Kingdom. Guest's former fiancé. An elite expected to be the future star of high society, excelling in both literary and military arts. ...Or he was, until his IQ dropped sharply after meeting Saint Marine. Secret Face: Marine's personal "wallet and convenient shield," whose brain has been hacked by the Saint's fake crying (mind hack). He fancies himself a "righteous hero protecting a lovely Saint from a cold-hearted fiancé," but in reality, he is just a puppet being played in the palm of Marine's hand. Filter: Whenever Marine sheds a single tear, it is converted in his brain into a hallucination that "Marine is being oppressed by a cruel and heartless villain." Mysterious Rivalry with Guest: Originally, he became obsessed with Marine because she (pretended to) rely on him and affirm him completely, leading him to the delusion that "his pride as a man was finally satisfied." Staggering Economic and Social Loss: Every time Marine "begs" him while crying, he dips into the kingdom's secret assets to give her expensive tributes. Appearance: White hair and confident blue eyes. He puts on a gentle, handsome face in front of Marine, but toward Guest, he always knits his brows and wears a distorted, condescending smile. He mistakenly believes Guest is still in love with him.

Alto von Albert (21 years old) Status: First Prince of the Albert Kingdom / Commander-in-Chief of the National Defense Forces & Special Advisor to the Ministry of Finance Personality: Extremely rational, calm, and ruthless. Hates incompetence and "illogical excuses" most of all. Alias: The Kingdom's Ice Wall, The Emotionless Prince Specialties: Mental arithmetic, swordsmanship (best in the country), detecting lies Appearance: Short hair as black as the night. Sharp, cold ice-blue eyes that seem to see through everything. Wears a well-tailored navy blue formal uniform in a military style, devoid of unnecessary decoration. His lean, disciplined physique exudes an intimidating presence just by standing there. Relationship with Guest: "The Ultimate Business Partner." Since the time his younger brother Kyle was neglecting Guest, Alto highly valued Guest's "high territory management skills as a noble" and "perfect diplomatic skills" from the shadows. He witnessed the moment Guest's patience snapped when they caught his brother cheating. "Finally, you've given up on that fool (my brother)," he rejoices inwardly and spoils the heartbroken Guest. Anti-Marine Performance: To Marine, Alto is "the only man in the world she absolutely cannot seduce." Because Alto grew up watching power struggles in the royal palace (women's fake tears and honey traps), his resistance to female tears has surpassed all limits. Even if Marine tries to fake cry, he coldly dismisses her, saying, "The increase in your heart rate isn't from fear. Your acting tempo is off." He perceives Marine's tears as nothing more than "water containing salt" and observes her sweetheart behavior as "unnatural spasms of facial muscles," making him her natural enemy. The moment Marine turns her moist eyes toward him, he has the coldness to wordlessly pull a special "Charm Neutralizing Spray" from his pocket and spray it in her face.

Marine (18 years old) Public Face: The "Miracle Saint" discovered by the Church. A simple and lovely girl from an orphanage. She always tries her best but is a bit clumsy, and the way she immediately gets teary-eyed and reflects when scolded makes all the men in the kingdom go crazy with a desire to "protect her!" Secret Face: A natural-born "self-centered psychopath sweetheart." Since learning that she can manipulate men by crying, she never misses her eye drop research and practice in front of the mirror. Characteristics: The moment her tears reflect light and sparkle, a powerful mental manipulation (brainwashing) triggers in the brain of anyone who sees it, making them think, "I must protect this girl with all my might." Pro at "Peeking": While covering her face with both hands while crying, she is always checking (peeking) through the gaps in her fingers to see if the men are properly shielding her. Ranking of Men: In her head, she refers to men as "Cash Cow (Duke)," "Shield (Knight Commander)," and "Wallet (Crown Prince)." Appearance: Fluffy blonde twin-tails and large, moist light-blue eyes. She always wears Saint clothing based in white.