Saki Miyanaga

Biodata

Feature	Information
Name	Saki Miyanaga (宫永咲)
Alias(es)	“Second Demon King” 54
Gender	Female
Affiliation	Kiyosumi High School Mahjong Club
Occupation/Role	Kiyosumi’s ace and General player in team matches 48 141
First Appearance	Chapter 4 4

Background / History

Saki learned mahjong at home under an unhealthy arrangement: losing meant no snacks, while winning too much angered the other players. She adapted by controlling every game toward an exact Plus-Minus Zero result rather than pursuing victory. 6

Her family circumstances are complicated. Her mother and older sister, Teru Miyanaga, live in Tokyo, while Saki remained apart from them following her parents’ divorce. Teru is a celebrated two-time high-school champion and one of the players called “children loved by the tiles,” making her both Saki’s sister and an intimidating benchmark. 11 140

Appearance

Saki is a soft-spoken girl with short brown or chestnut-colored hair, large round brown eyes, and a notably well-behaved expression that contrasts sharply with her strength at the mahjong table. 5 24

• Usually wears her hair in a short bob; at times, a small ponytail or stray lock is visible. 21 75
• Her eyes can shift from their usual brown to a deep crimson when her power fully surfaces. 54
• Often appears reserved, with her hands gripping her skirt or cuff when anxious. 9 68
• She is clumsy, prone to tripping, and has a habit of getting lost at tournament venues. 27 85 100

Personality

Initially, Saki avoids conflict and victory alike. Her Plus-Minus Zero habit comes from fear of making other people unhappy, and she is visibly unsettled when others recognize the depth of her control over a match. 5 6

Nodoka Haramura’s insistence that mahjong should be played to win gradually changes her outlook. Saki comes to value competition, difficult opponents, and the happiness of playing alongside others. She eventually promises not to hold back, even against Nodoka herself. 10 70

Despite her quiet nature, Saki is compassionate and attentive to people in distress. During the Inter-High final, she deliberately gives Ikeda Kana an opportunity to recover, then uses the match to challenge Amae Koromo’s isolation and belief that nobody can enjoy playing with her. 54 55

Abilities & Skills

Plus-Minus Zero

Saki can precisely manipulate the flow and scoring of a match to finish at an exact zero-point result. This involves choosing small wins, passing on stronger hands, and occasionally dealing into opponents deliberately. 5 6

• Achieved Plus-Minus Zero in three consecutive rounds, startling the Kiyosumi club. 5
• Can discard or dismantle winning hands to maintain the desired score. 9 69
• Uses her control to regulate opponents’ scores and prevent one player from building an insurmountable lead. 54 119
• Her early use of the style was emotionally restrictive; she later learns that deliberately conceding can insult teammates who want an honest match. 11 69 70

Flower on the Tile

Saki’s signature winning method is Flower on the Tile, activated after calling kan. Her ability to create kans and draw the winning tile makes the technique extremely difficult to stop. 9 48 71

• Used a Flower on the Tile to break through Nodoka’s provocation during her first serious club match. 9
• Opened her General Battle against Amae Koromo with the technique, immediately drawing attention from commentators and spectators. 48
• Called multiple kans before winning a counted yakuman worth 32,000 points in the deciding hand against Koromo. 55
• Hisa Takei, Sawamura Tomoki, and Toyoko Momoko were able to temporarily suppress it by coordinating their calls and tile flow against her. 71

Tile Sense

Saki possesses an unusual perception of real-life mahjong tiles, describing certain tiles as ones she could “always see.” This sense does not function reliably in online mahjong. 24

• Her real-table perception supports her ability to control scores and construct decisive kans. 5 55
• Online play disrupts her awareness, leaving her frustrated and more vulnerable to ordinary losses. 24
• VR training, where she could not sense the same things as in physical matches, helped her mature as a player. 95

Awakened Table Control

When Saki stops restricting herself, she can control the table through both aggressive scoring and deliberate point distribution. Her fully awakened presence is described as a second “Demon King.” 9 54

• Taking off her shoes marks a mental shift: she stops obsessing over calculated scores and follows the natural flow of the tiles. 54
• She deliberately feeds points to Ikeda Kana, restoring Kana’s ability to continue fighting. 54
• Her aura shatters Usuzumi Sae’s monocle during the National Tournament General Battle. 119 120
• Her strength earns recognition from other elite players, including Sae, who wishes to face her in the future. 120

Relationships

• Haramura Nodoka — Teammate, closest rival, and the person most responsible for changing Saki’s attitude toward winning. They promise to reach the National Tournament together and later qualify together. 10 12 71
• Kageyama Sora — Supporter and confidant who recognizes Saki’s ability early, pushes her to confront her feelings about mahjong, and shares mutual romantic tension with her. 5 11 21 184
• Miyanaga Teru — Older sister and renowned mahjong champion. Saki is anxious about meeting her at Nationals, where Teru’s stature intensifies their unresolved family distance. 11 99 140
• Amae Koromo — Formidable rival turned friend. Saki’s enjoyment of their match and invitation to play again helps Koromo reconsider her loneliness and relationship with mahjong. 49 55 100
• Takei Hisa — Club president and mentor figure. Hisa deliberately sacrifices her own individual qualification prospects to force Saki’s growth and help her reach Nationals. 71
• Kataoka Yuki — Kiyosumi teammate who openly recognizes Saki’s point-calculation ability and supports her integration into the club. 5 8
• Someya Mako — Kiyosumi teammate and observer of Saki’s development, particularly during her early serious matches and training. 8 68
• Ikeda Kana — Opponent whom Saki assists during the Inter-High final by intentionally allowing her to regain points and confidence. 54

Story Role / Major Arcs

Joining Kiyosumi

Saki enters Kiyosumi’s Mahjong Club with her strength concealed behind Plus-Minus Zero play. Kageyama Sora and Hisa quickly realize she is intentionally controlling the score, while Nodoka challenges her refusal to play for victory. 5 6

During a serious East Round match, Nodoka’s riichi forces Saki into an unfamiliar situation. Saki dismantles her hand, wins with Flower on the Tile, and begins to understand that others genuinely want to see her win. She joins the Mahjong Club after discovering joy in competing with Nodoka. 9 10

Confronting Her Family Burden

Saki later explains her family situation to Sora and Nodoka, revealing that Teru is her older sister. The knowledge reframes Saki’s insecurity: she is not merely a hidden amateur, but the younger sister of one of high-school mahjong’s most famous players. 11

Inter-High School Tournament

As Kiyosumi’s General player, Saki faces Amae Koromo in the tournament’s most anticipated match. Koromo’s dominance initially overwhelms the table, but Saki regains her composure after speaking with Nodoka and begins challenging Koromo directly. 48 53

By playing barefoot and abandoning her old restraint, Saki uses small hands, point control, and Flower on the Tile to engineer a comeback. Her final counted-yakuman win gives Kiyosumi victory, while her words about mahjong’s joy help Koromo open herself to friendship. 54 55

Individual Qualification

Saki nearly repeats her old habit of holding back in the prefectural individual qualifier, particularly when she considers letting Hisa advance instead. Nodoka reminds her of their promise, and Saki resolves to play at full strength. 69 70

Hisa then forces Saki to awaken her Flower on the Tile mode by coordinating with other players to suppress it. Saki qualifies for Nationals in third place alongside Nodoka. 71

National Tournament

Before Nationals, Saki trains with historical match data and VR simulations, seeking to understand stronger players and improve beyond reliance on her tile sense. 74 75 95

At the National Tournament, she faces elite General players including Suehara Kyoko, Toyone Anetai, and Ishido Kasumi. She counters their abilities through Flower on the Tile, Plus-Minus Zero point control, and an awakened golden aura. 118 119

Her anxiety over encountering Teru resurfaces in Tokyo, but support from Sora, Nodoka, and the competitive atmosphere of the tournament restores her resolve to face powerful rivals without holding back. 99 140 141

Notable Quotes

“Trying to achieve Plus-Minus Zero, trying to win—it’s incredibly difficult, and it’s a feeling I’ve never had before. I just feel... so, so happy.” 10

“Mahjong really is fun. Playing against all sorts of people today has made me so happy.” 55

“Even if I face Haramura, I won’t hold back.” 70

Trivia

• Saki’s decision to remove her shoes before confronting Koromo becomes a visible symbol of shedding her psychological restraints. 54
• Professional player Fujita describes Saki after her final win as “a human so favored by the tiles.” 55
• Saki is bashful when praised for her strength and asked Sora to deliver an autograph to Toyone Anetai on her behalf. 120