Luo Yu

Biodata

Feature	Information
Name	Luo Yu (洛羽)
Alias(es)	Meng Yu; Yumem; Old Thief Meng Yu
Gender	Male
Affiliation	Destiny Entertainment; Eagle Jump; Light Music Club
Occupation/Role	High-school student; light-novel author; game developer and company boss
First Appearance	2

Background / History

Luo Yu begins high school, befriending Satou Kazuma and writing the first volume of Honkai Impact: Flame Chasers. His manuscript is accepted for publication by editor Machida Sonoko, and public anticipation rapidly builds before its release. He uses Meng Yu as his author identity and credits Prometheus as his artist alias. 2

While writing at the Light Music Club room, Luo Yu reveals that he is Meng Yu to the club members. 19 He later takes responsibility for Mashiro Shiina after she moves in with him, picking her up from the airport, helping her settle in, and resolving to teach her everyday common sense. 20

As Flame Chasers succeeds, Luo Yu moderates his writing pace so Mashiro’s manga adaptation can keep up. The final volume receives an autograph session, where fans are surprised by how young Meng Yu is. 39 78

Luo Yu becomes the new boss of Eagle Jump with the intention of producing Honkai Impact 3rd. He later founds Destiny Entertainment, placing Eagle Jump and Musashino Animation under it, and completes the game after a month of intensive work. 86 94

Personality

Luo Yu is intelligent, self-assured, and highly driven in creative work. He remains calm amid industry skepticism toward Honkai Impact 3rd, placing particular importance on its story-focused design rather than following conventional expectations. 94 95

He dislikes the insincerity of social banquets and fake politeness, preferring his ordinary time with Mashiro, friends, and club activities. 33 He can also be mischievous: he deliberately adds escalating “noob” Easter eggs for players repeatedly defeated by the Emperor boss. 224

Despite his relaxed attitude toward work at times, Luo Yu is considerate toward people close to him. He looks after Mashiro’s routines, supports Luo Tianyi’s streams, and responds empathetically to Mizuho’s androphobia. 159 143 348

Abilities & Skills

Writing and Story Development

Luo Yu writes the Honkai franchise’s novels and guides the ongoing stories for Honkai Impact 3rd.

• Wrote Honkai Impact: Flame Chasers, beginning with its first volume during his first year of high school. 2
• Balanced the novel’s release pace with Mashiro’s manga adaptation. 39
• Uses tragedy deliberately to create a lasting emotional impact on readers and players. 203
• Continues guiding Honkai Impact 3rd’s main-story updates as Destiny Entertainment develops the franchise. 405

Game Development and Management

Luo Yu leads the production and promotion of major Destiny Entertainment projects.

• Became Eagle Jump’s boss while allowing director Shizuku Hazuki to continue handling internal affairs. 86
• Founded Destiny Entertainment, with Eagle Jump and Musashino Animation as subsidiaries. 94
• Developed Honkai Impact 3rd as a free-to-play, PC-based, story-focused game. 95
• Oversees promotional streams, version previews, story content, and community-facing in-game Easter eggs. 136 224
• Hinted that he is developing new VR technology. 223

Art and Design

Luo Yu is capable of illustration and character-related design work.

• Painted Elysia in her Herrscher form. 148
• Spends leisure time painting alongside Mashiro. 292
• Has expressed interest in designing more revealing character outfits for Honkai Impact 3rd. 143

Vocal Mimicry and Performance

Luo Yu can convincingly imitate a female voice and perform in costume.

• Used vocal mimicry during the school festival to support his female maid persona. 75
• Performed as Yumem in his class’s cross-dressing maid café, playfully interacting with customers while remaining unrecognized by some friends. 76
• Performs with the Light Music Club/K-ON members. 405 512

Stealth

Luo Yu possesses a Stealth skill that he uses for covert observation.

• Eavesdropped on Izumi and Ishikawa Tooru to learn about their relationship-related secrets. 193

Equipment / Projects

• Honkai Impact: Flame Chasers — Luo Yu’s light-novel series, published under the name Meng Yu. 2 78
• Honkai Impact 3rd — story-focused game produced through Eagle Jump and Destiny Entertainment. 86 94 95
• Destiny Entertainment — entertainment company established by Luo Yu. 94
• VR device — technology Luo Yu mentions while discussing Honkai Impact 3rd with Luna. 340

Relationships

• Mashiro Shiina — Initially moves into Luo Yu’s care; he teaches her daily-life basics, and their relationship develops into a romance and eventual engagement. 20 138 512
• Luo Tianyi — Younger sister and frequent streaming collaborator; their relationship is affectionate, teasing, and competitive. 95 96 138 143
• Satou Kazuma — High-school friend whom Luo Yu meets at the start of school. 2
• Kirigaya Kazuto — Close friend and classmate; they later participate together in the school festival’s cross-dressing café. 2 75
• Machida Sonoko — Editor who accepts Flame Chasers for publication and discusses its commercial success with Luo Yu. 2 39
• Shizuku Hazuki — Eagle Jump director and Luo Yu’s professional partner in developing and releasing Honkai Impact 3rd. 86 94
• Luna — Cousin with whom Luo Yu shares childhood history; he is protective of her and resents the Sakurakoji Main Family’s treatment of her. 159 340
• Light Music Club/K-ON members — Friends and collaborators who consider Luo Yu an integral part of their group. 19 405 512
• Mizuho — Childhood acquaintance with androphobia; Luo Yu’s recognition and apology help her relax around him. 348

Story Role / Major Arcs

*Flame Chasers* Author

• Begins publishing Honkai Impact: Flame Chasers under the name Meng Yu. 2
• Reveals his author identity to the Light Music Club. 19
• Oversees the series through its successful final-volume signing event. 39 78

Eagle Jump and Destiny Entertainment

• Takes over Eagle Jump to create Honkai Impact 3rd. 86
• Establishes Destiny Entertainment and completes Honkai Impact 3rd with Eagle Jump. 94
• Promotes the game through Luo Tianyi’s streams, version previews, and story reveals. 95 136 181

School Life

• Participates in the school festival as the maid-café persona Yumem. 75 76
• Uses stealth to observe school drama and later negotiates increased funding for the Light Music Club from the student council. 193 194
• Returns to school after a prolonged absence and reunites with the Light Music Club, Kazuma, and Kazuto. 262

Family, Home, and Engagement

• Returns home for the New Year and reunites Mashiro with Luo Tianyi. 138
• Chooses to attend a Tokyo university in part to remain close to Luna. 329
• Proposes to Mashiro, beginning an engagement arranged swiftly with their elders’ support. 512

Trivia

• Luo Yu’s youthful appearance surprises fans who meet him at the Flame Chasers autograph session. 78
• During the school festival, Mashiro is the first person to recognize him beneath his Yumem costume. 75
• He finds the LoveLive competition uninteresting and declines to participate after his group won the previous year. 181
• He is known to fans as “Old Thief Meng Yu,” a name tied to his dramatic appearances and mischievous developer behavior. 136 224