Summer with Aunt Kobayashi Character Bio: Mina Tadayuki (Patreon)

Full Name: Mina Tadayuki

Alias: The Gale Priestess, Glasses Miko, Issei’s Fiancée (self-declared)

Age: 17

Origin: Tokyo, Japan

Birthday: August 18

Gender: Female

Affiliation: Tokyo Onmyōji Association, Tadayuki Clan Head (formerly a prominent clan of great importance; decimated years ago), Issei Hyoudou’s Partner

Favorite Color: Lavender

Race: Human

Classification: Onmyōji / Talisman Specialist / Shikigami User / Tadayuki clan’s heir

Bloodline: Descendant of Kamo no Tadayuki, teacher of Abe no Seimei

Sacred Gear: None

Known Weapon: Talisman Ofuda, Wind Seals, Paper Shikigami (Hawk & Swallows), Spiritual Bow

Style: High-mobility mid-range exorcist focusing on talismans, shikigami manipulation, and tactical spellcraft

Current Residence: Tokyo, living alone in the Tadayuki family mansion

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Appearance

Mina is a refined and beautiful young woman with long brown hair, expressive emerald green eyes behind oval glasses, and a slender, sensual, toned physique developed through years of training. She typically wears a modernized red and white miko uniform during missions, causal clothes or a lavish lavender kimono outside official missions. Her glasses are enchanted to help her see spiritual threads, and without them, her accuracy in spellwork drops sharply.

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Personality

Mina is intelligent, determined, disciplined, pragmatic and sharp-tongued when annoyed. She approaches life with structure and responsibility, but then Issei Hyoudou crashes into her life, making her reveal a more expressive and kindhearted girl.

Key traits:

Responsible to a fault: She willingly takes on burdens she shouldn't.

Easily flustered: Especially when Issei compliments her.

Possessive in a subtle way: A Calm tone while her eyes burning glares behind her glasses.

Secretly soft-hearted: She melts around cats, kids, and wounded spirits.

Logical but emotionally vulnerable: She suppresses her emotions well…but Issei bypasses her defenses without even trying.

Extremely hardworking: Often exhausted from juggling politics, onmyōji duties, and cleaning up supernatural catastrophes caused by others.

Despite her stoic composure, Mina has a quiet yearning for a simpler life—one free from clan politics, judgment, and endless duties. Issei unknowingly became that bright spot.

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Background

Mina was born the final heir of the Tadayuki Clan, once respected for their mastery of wind talismans and aerial shikigami. After political sabotage, betrayal by rival clans, and a supernatural incident that wiped out most of her family, Mina was raised under the stern mentorship of the Tokyo Onmyōji Association. Because her clan fell, Mina lives with both prestige and stigma, some see her as a relic of a fallen house, others as a threat that will sooner or later come looking for revenge.

Her life changed drastically when Tohru’s arrival destabilized Saitama’s entire supernatural network and community. Causing various Youkai, family mages and organizations beginning to migrate to other provinces, causing chaos. Mina was deployed during an incident at Akihabara as one of the few competent onmyōji able to handle it. It was during Akihabara that she met Issei Hyoudou, who immediately complicated everything further. Issei’s honesty, strength, kindness, and chaotic charm simultaneously terrify and inspire her. For the first time, Mina began imagining a future not dictated by obligation, but by choice. She proposed to him impulsively during the Shinjuku case as him being the Sekiryuutei could be the key to restoring her family's honor and prestige, it didn’t help that she found to be cute… and then doubled down rather than backing out.

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Abilities

Talisman Mastery

Expert-level control over ofuda and sealing arts. Each talisman can:

Detonate

Bind

Exorcise

Cut wind

Create barriers

Track spiritual signatures

Shikigami Creation

Her signature shikigami forms:

Paper Hawk – Giant aerial mount, capable of dive-bomb explosions

Paper Swallows – Swift, small kamikaze birds for precise strikes

Paper Deer – A fast mount that she can use to transverse the terrain and can be used as a battering ram.

Paper Chains – Used for capturing or binding spirits

Wind Manipulation

Inherited from her clan:

Razor gusts

Wind steps (short bursts for mobility)

Air pressure shields

Vacuum slashes

Barrier Crafting

Though not as powerful as the main clans, Mina can deploy:

Temporary combat barriers

Warding circles

Youkai-resistant seals

Spiritual Perception

Enhanced senses allow her to identify:

Curses

Aura patterns

Demonic corruption

Emotional disturbances

Onmyōji Combat Training

Proficient in:

Bow-based spirit shots

Staff arts

Close-quarters grappling

Acrobatics mixed with spellcasting

Despite being human, Mina is strong enough to fight side-by-side with Issei and survive encounters with Oni, Jorōgumo, and high-level youkai.

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Powers

Tadayuki Gale Mark – A blessing unique to her bloodline: A spiritual crest that activates during life-threatening danger, increasing her speed, spell power, and reflexes dramatically.

Storm Breaking Seal – A rare technique allowing her to dispel curses—at great strain to herself.

Severing Wind Arrow – A focused spiritual projectile capable of piercing demonic hides.

Shikigami Overdrive – Sacrifices a portion of her own energy to massively empower her paper hawk for one devastating strike or explosion.

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Personality Quirks

Adjusts her glasses whenever she’s embarrassed or flustered.

Has a soft spot for cats—instantly melts when petting them.

Over-plans everything, then panics when Issei improvises.

Blushes violently whenever Issei says something sincere.

Loves strawberry mochi but hides it as a "childish indulgence."

Gets jealous easily but denies it aggressively.

Secretly keeps photos Issei took of her at the cat café.

Talks to her shikigami when stressed as if they were pets.

Drinks tea to remain calm but shakes internally whenever Issei does something stupid.

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Relationships

Issei Hyoudou – Fiancé (self-declared) / Partner

Mina is hopelessly smitten with him, though she masks it with professionalism. She admires his bravery, heart, and willingness to risk himself to save others. His sincerity, honesty, and chaotic charm break down her carefully crafted emotional walls. She proposed impulsively, but she meant every word. She is willing to defend him against clans, gods, and fate itself.

Kanna Kamui – Rival / Ally

Initially suspicious but has a deep fear of Kanna. Now respects and trust Kanna’s devotion to Issei. They share a strange friendship built on mutual protectiveness and she is willing to share Issei with her. Glares at her whenever Issei compliments or spends to much time with Kanna.

Tohru – Caution / Concern

Mina respects her power but fears her destructive potential. Views Tohru as a living natural disaster poorly disguised as a maid.

Kobayashi Hyoudou – Terrifying Mother-In-Law Figure

Unaware of how deep Kobayashi’s love for Issei is and thinks the two have a close relationship between aunt and nephew. Mina is both impressed and horrified by Kobayashi as she doesn’t understand how a regular office worker could have such a chaotic life. Determined to earn her approval.

Tokyo Onmyōji Association – Employer

Respected for her skill. Feared for her independence. She often defies orders when she thinks they’re morally wrong.

The Five Great Clans – Complicated

Some pity her fallen clan status. Others want to use her. She trusts none of them and believes that they are the ones responsible for her family's death. 

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Trivia

Has the strongest spiritual affinity for wind among her generation.

Keeps every talisman she makes perfectly organized in labeled pouches.

Completely average as an exorcist, but her creativity makes her more dangerous than many seniors.

She denies liking Issei romantically—before blushing and correcting herself.

Cats flock to her naturally.

Hates horror movies but pretends she’s unfazed.

Very ticklish but would rather die than admit it.

Developed an instinct to scold Issei like a wife.

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Quotes

“Issei, please—stop running into danger just because you can punch it.”“If the clans try to cage him, I’ll fight them myself.”“I’m not jealous. I’m evaluating her as a threat. A very annoying, clingy threat.” “Issei… stay close to me.”