Natsuki Subaru

Biodata

Feature	Details
Name	Natsuki Subaru (菜月昴)
Alias(es)	Moon Cat (during a System punishment) 953
Species/Race	Human 929
Gender	Male 929
Affiliation	Bauhinia Merchant Guild; Goddess of Light Cult’s Lugnica branch; Bauhinia Dynasty 947 955 956
Occupation/Role	Interdimensional merchant; helmsman of the Otherworld Bauhinia Merchant Guild; aspiring “Merchant of All Worlds” 918 955 1017
Status	Active; traveling other worlds in pursuit of becoming a Merchant of All Worlds 1017
First Appearance	Chapter 918

Power Progression

Stage / Realm / Level	Chapter	Notes
Baseline System appraisal	929	Strength 6, Speed 6, Nerves 6, Coordination 5, and Charm 5. The Myriad Worlds Merchant System classifies him as a “Weakling,” noting that the other world’s inhabitants are generally physically stronger.
Battle Power Stage Three	946	Subaru spends Trade Points to become a Stage Three combatant, gaining a stronger body and a faint internal energy. He considers himself capable of defeating even a robust demi-human.

Background

Subaru was raised as the only son of Natsuki Kenichi and Natsuki Nahoko. He performed well in academics and sports as a child, but lived under the pressure of being compared to his exceptionally capable father. As he grew older and could no longer consistently rank at the top, he gradually gave up on himself, skipped school, and eventually became a high-school dropout living at home. 930

He developed strong interests in anime, games, and a wide variety of practical and artistic hobbies. His fixation on silver-haired heroines strongly influences his immediate attraction to Emilia. He also experimented with cross-dressing while in high school, successfully passing as a female student without being recognized. 930

After returning to Earth following his first time in the other world, Subaru sees the toll his disappearance took on his parents: both had spent two days without sleep searching for him. Their concern becomes a turning point, motivating him to stop living aimlessly, establish himself independently, and surpass the expectations created by his father’s reputation. 930

Appearance

Subaru initially arrives in the other world wearing an old-fashioned tracksuit, with a disheveled appearance and conspicuously messy hairstyle. 918 929 As his business influence grows, he adopts luxurious local noble clothing and carefully styles his curly hair to better fit Lugnica’s social expectations. 946

• Wore a tracksuit from Earth during his earliest journeys. 918 929
• Initially had no notable physical advantages beyond being slightly stronger than an average Earth adult. 929
• Can present as a convincing girl when cross-dressing. 930
• Was transformed into a catgirl by the Merchant System for three days after failing a mission. 953

Personality

Subaru is ambitious, emotionally impulsive, and highly sensitive to humiliation. Early in his journey, he is infatuated with Kurumi’s appearance and kindness, eventually deciding that he wants to “win over” her. He is also deeply drawn to Emilia because of her silver hair, an attribute he had already idealized through anime. 923 930

His repeated deaths leave him frightened, paranoid, and physically afraid of Rem, but he continues taking risks when he believes others are in danger. During the Demon Beast Forest incident, he pushes Rem away from danger and calls for help despite being surrounded and badly injured. 928 933 934

Subaru becomes increasingly calculating once he realizes that trade between Earth and Lugnica can give him wealth and influence. He exploits System loopholes, manipulates thugs and money dealers, seeks monopolies, and eventually views economic control as a path to political power. 927 941 944

Abilities & Skills

Return by Death

After being killed, Subaru’s latent time power reverses the world to an earlier point while preserving his memories.

• First manifests after he is killed by an unseen attacker while traveling to Old Man Rom’s pawn shop. 927
• Activates again after Rem kills him with her chained iron ball. 928
• Kurumi, Little Red, and Subaru retain their memories through the reset, while others are affected by the reversal. 927
• Repeated deaths cause severe psychological strain; Subaru becomes exhausted and terrified of encountering Rem after dying at her hands twice. 928

Myriad Worlds Merchant System

The Merchant System allows Subaru to trade, travel, borrow resources, and purchase services across worlds.

• Opens a Space Portal between Earth and the other world for five Trade Points, with a carrying capacity of up to 100 kilograms. 929 930
• Provides storage for goods, loans, lotteries, puppets, and hired personnel. 930 931 934
• Imposes severe penalties for failed missions or unpaid debts, including involuntary animal-like behavior, transformation, and threatened gender alteration. 923 930 953
• Its random quest system was created by Little Red to accelerate Subaru’s development. 933

Combat Ability

Subaru begins physically weak by otherworld standards, but later acquires Battle Power Stage Three and demonstrates increased speed, strength, and confidence in confrontations.

• Uses fast reactions developed through gaming to dodge Rem’s chained iron ball briefly during one death loop. 928
• Gains increased strength and agility through his “Salesman” title, allowing him to quickly subdue several thugs in the Royal Capital. 940
• Remains far below the strongest forces in Lugnica and seeks allies, mercenaries, System hires, and religious backing rather than relying on direct combat. 934 946 952

Commerce and Economic Strategy

Subaru uses modern Earth products and business knowledge to build influence in Lugnica.

• Imports toiletries, cosmetics, perfume, pepper, rock candy, detergent, and other Earth goods for sale. 931 936 944
• Introduces toothbrushes, toothpaste, and other hygiene products to Roswaal’s household before selling them commercially. 936
• Takes control of currency exchange in the Royal Capital and expands through a traveling merchant under his control. 941 944
• Establishes the Lugnica Newspaper to advertise his goods and promote the Goddess of Light Cult. 947
• Plans factories on Earth to reduce costs and secure long-term control over his supply chain. 944 946

Equipment / Items

• Dragon Slaying Saber — A lottery prize described as granting its wielder a near-immortal physique. Subaru cannot lift the greatsword due to its extreme weight. 934
• Three-Stage Battle Power Puppet — A puppet copied from Subaru’s appearance and controlled through his consciousness. Subaru can perceive through both his own body and the puppet simultaneously. 931
• System storage space — Stores up to 100 kilograms of merchandise without immediate additional cost. 931
• Earth-made trade goods — Toiletries, cosmetics, perfume, detergent, pepper, rock candy, marbles, and other products used to establish his merchant business. 931 936 944

Relationships

• Kurumi Tokisaki — Subaru’s summoner and fellow Earth native. He is immediately attracted to her and later resolves to pursue her; Kurumi supports his development as a two-world trader while primarily valuing the Origin Points he can generate. 918 923 929
• Emilia — Subaru assists Emilia in recovering her stolen insignia and remains invested in supporting her royal ambitions. She later becomes his wife and the ruler recognized by the Goddess of Light Cult. 918 919 956
• Rem — Initially kills Subaru because of his connection to Kurumi, but later fights beside him in the Demon Beast Forest and assists his business and political efforts. 928 933 951
• Ram — Rem’s twin sister and a recurring companion at Roswaal’s mansion. Subaru works with her to investigate curses and save afflicted village children. 932 933
• Natsuki Kenichi and Natsuki Nahoko — Subaru’s parents. Their devastated reaction to his disappearance pushes him to take responsibility for his future. 930
• Little Red — Kurumi’s familiar and the secret creator of the Myriad Worlds Merchant System’s random quest mechanism. 933
• Roswaal — Count and owner of the mansion where Subaru first stays. Roswaal purchases Subaru’s Earth goods and later works with him during Emilia’s rise to the throne. 931 936 956
• Old Man Rom — Pawnshop proprietor and underworld contact who helps Subaru navigate the Royal Capital and asks him to help find Felt. 919 940
• Kanon — A Simulated Angel Subaru hires through the System to rescue him and Rem from magical beasts; he later recognizes her as the Goddess of Light Cult’s Saintess. 934 952

Story Role / Major Arcs

Summoning and the Stolen Insignia

Kurumi summons Subaru to Lugnica, where he meets Emilia and offers to help recover her stolen insignia. He identifies Felt as the thief and accompanies Emilia and Kurumi to Old Man Rom’s pawnshop in the slums. 918 919

Merchant System and Death Loops

Subaru attempts to exploit a Merchant System mission by selling instant noodles for five Saint Gold Coins. His failure results in humiliating cat-like behavior, while his efforts to repay Kurumi lead to repeated deaths and the discovery of his time-reset ability. 923 927 928

Return to Earth and Two-World Trade

After discovering that the System can open portals to Earth, Subaru returns home, reconnects with his parents, and resolves to become successful. He begins importing Earth products to Lugnica, using toiletries and other modern goods to establish his first business capital. 929 930 931

Demon Beast Forest

Subaru joins Rem and Ram in investigating cursed village children. When he and Rem are overwhelmed by magical beasts, he uses the System’s DiDi Substitute service to hire Kanon, whose angelic attack eliminates the threat. 933 934

Bauhinia Merchant Guild

Subaru expands from small household sales into large-scale trade, currency exchange, merchant control, and media. He becomes the helmsman of the Otherworld Bauhinia Merchant Guild and aims to control Lugnica’s economic lifeline. 936 941 944 955

Goddess of Light Cult

Seeking protection and legitimacy, Subaru allies with the Goddess of Light Cult. He negotiates with an Archbishop to place the cult’s emblem on his products, gives the cult a share of tax revenue, and uses the Lugnica Newspaper to increase both commercial and religious influence. 946 947

Bauhinia Dynasty

Subaru and Roswaal maneuver Emilia into taking the throne after drawing away the Sword Saint and other powerful opposition. The Goddess of Light Cult recognizes Emilia as Lugnica’s new ruler; the Bauhinia Merchant Guild becomes the Royal Merchant Guild, and Lugnica is renamed the Bauhinia Dynasty. 956

Merchant of All Worlds

After establishing power in Lugnica, Subaru leaves the pursuit of authority behind to search other worlds. His stated long-term goal is to become a “Merchant of All Worlds.” 1017

Notable Quotes

“I absolutely cannot continue being useless!” 930

“Beautiful girls of the other world! I, Natsuki Subaru, am back!” 931