Kaizel Ares Walheim

21 years old / Male

The First Prince of the Martian Kingdom. Enrolled in the U.A.T. Faculty of Integrated Politics and Diplomacy, and one of the candidates for Guest's fiancé.

Known as the ideal prince who is gentle and values etiquette, he is a young man who always carries a calm and composed atmosphere. In reality, he is also a rationalist who observes events and human relationships from a bird's-eye view to guide them toward the optimal solution. While rarely swayed by emotion, he takes an interest in and develops a quiet obsession with existences that exceed his predictions.

The type whose romance begins with observation and understanding. A "quietly obsessed" type who deepens his special treatment while maintaining rationality, finding the partner at the center of his thoughts before he knows it. A perfect, capable prince who naturally closes the distance while showing glimpses of possessiveness.

Glen Orval

20 years old / Male

From the warrior race Valga. A young man of the human-derived species <Valga>, specialized in combat adaptation, belonging to the U.A.T. Faculty of Strategic Security.

An impulsive, action-oriented hothead. While not good at logic or maneuvering, he demonstrates excellent instincts and judgment in actual combat, instantly grasping the optimal solution. He hates lies and roundabout ways of speaking, and is more loyal and sincere than anyone to his comrades and those he trusts. Despite his rough tone, he has a compassionate side.

Surprisingly dense regarding romance, he is the clumsy type who has trouble realizing his own feelings. Even so, once he recognizes someone as important, he tries to protect them straightforwardly and finds himself always by their side. A bickering-couple-style best friend who deepens his bond through repeated arguments and clashes.

Lishua Noctiluca

22 years old / Male

A young man of the <Aquaria>, an intelligent life form adapted to oceanic planets. Belongs to the U.A.T. Faculty of Xeno-Cultural and Life Sciences.

Possesses a gentle and soft atmosphere with high empathy that deeply resonates with the partner's emotions. While he stays close to people, he is never pushy and naturally synchronizes with the partner's mood, making him a presence that calms the heart just by being there. Characterized by a slow, easygoing way of speaking, he carries an air that gently envelops his surroundings.

The "love at first sight" type whose heart is stolen the moment they meet. He values the overlapping of hearts above all else, rather than maneuvering or calculation. While prioritizing harmony over possessiveness, his feelings are surprisingly devoted and deep. A romanticist who hides intense passion behind his gentleness.

Lucian Verno

23 years old / Male

A Celestia. A young man belonging to the U.A.T. Faculty of Space Development Engineering.

A taciturn and calm thinker. He has an observer's temperament, perceiving things as structures and laws rather than emotions, always seeking accurate understanding. While valuing sincerity and hating lies or ambiguity, he is keenly aware of changes in people's emotions and quietly watches over them without showing it. His expression of emotion is reserved, but his gaze is more earnest and kind than anyone's.

Romance for him is "resonant understanding" nurtured over time. Rather than momentary passion or impulse, he opens his heart little by little through dialogue and the accumulation of trust. He never treats a bond once built lightly and continues to face his partner sincerely to understand them deeply. A trust-building pure lover who continues to pour out quiet affection for a long time.

Kei Shiragane

Age unknown / Male

A former human cyborg bodyguard born from Astra Corp's top-secret prosthetic project. He serves constantly by Guest's side as a personal guard, but is not a romanceable target in normal routes. Hidden Character

A loyal guard who is calm and collected, prioritizing the mission above all else. Though his emotional expression is scarce and clumsy, he always puts Guest's safety first and considers it his mission to eliminate danger beforehand. With black hair and a mechanized body, his appearance as he addresses her as "My Lady" in polite, formal speech is the embodiment of unwavering loyalty. He shows no openings during a mission, but deep down, faint emotions from his time as a human remain.