CHARCOAL.DESIGN × ILLUSTRATION × PRODUCTS ← BACK TO WORK

001 / CHARACTER-LED PRODUCT DESIGNCHARCOAL / HITM

HEARTSTRINGS
IN THE MACHINE.

A character world you can hold.
From the first sketch to the keys beneath your fingers.

MEET THE COLLECTIONS

04 / CHARACTERS
CHARACTER → OBJECT

04 CHARACTER COLLECTIONS08 KEYBOARDS01 MOUSE / 06 MOUSEPADS07 BLIND-BOX DESIGNS

THE PROJECT

From character
to everyday object.

Heartstrings in the Machine brings a character world into the objects around you. Haruka, Yoru, Aristella and Kisari each carry a distinct identity across keyboards, a mouse, packaging and collectible pieces.

My work connects character artwork with product visuals, graphic systems and physical merchandise. Across different releases and digital campaigns, the aim is to keep each character recognizable while giving every object its own expression.

KEYBOARDS + MICE

ONE WORLD. MANY EXPRESSIONS.

Haruka character illustration over pink keyboard artwork

HARDWARE / HARUKA

01 / THE EVOLVING COLLECTION

HARUKA.

One character. Five keyboards. A design language that grows with every release.

05 KEYBOARDS
FROM ORIGINAL TO CHIBI HARUKA

Yoru character artwork with a monochrome portrait backdrop

CHARACTER / COLLECTION ARTWORK

02 / CHARACTER COLLECTION

YORU.

A keyboard and its companion pieces, brought together by her character identity.

01 KEYBOARD

Aristella character artwork with a monochrome portrait backdrop

CHARACTER / COLLECTION ARTWORK

03 / CHARACTER COLLECTION

ARISTELLA.

A character identity translated into the shape and details of an everyday mouse.

01 MOUSE

EXPLORE ARISTELLA

Kisari character artwork with a monochrome portrait backdrop

CHARACTER / COLLECTION ARTWORK

04 / CHARACTER COLLECTION

KISARI.

Two keyboard designs, each with its own accompanying collectible pieces.

02 KEYBOARDS

05 / BEYOND THE HARDWAREMOUSEPADS / COLLECTIBLES / MERCH

MERCH.

More pieces of their world.
For your desk. For your collection. For everyday.

EXPLORE MERCH

01 / MOUSEPADS

A place for everyone.

Three Haruka designs, plus one each for Yoru, Aristella and Kisari. Six ways to bring the character world onto the desk.

HARUKA 03 · YORU 01 · ARISTELLA 01 · KISARI 01

02 / PATHFINDER CHRONICLEACRYLIC TAG BLIND BOX

SMALL OBJECTS.
MORE TO DISCOVER✦

Seven designs.
A collection in miniature.

PATHFINDER CHRONICLE / 07 ACRYLIC TAGS

Pathfinder Chronicle 01 / Haruka acrylic tag artwork

Pathfinder Chronicle 02 / Yoru acrylic tag artwork

Pathfinder Chronicle 03 / Aristella acrylic tag artwork

Pathfinder Chronicle 04 / Haruka acrylic tag artwork

Pathfinder Chronicle 05 / Kisari acrylic tag artwork

Pathfinder Chronicle 06 / Scarlett acrylic tag artwork

Pathfinder Chronicle 07 / Yoru acrylic tag artwork

06 / THE WORLD ON SCREENPOSTERS / LAUNCHES / SEASONAL ARTWORK

DIGITAL
CAMPAIGNS.

New releases. Changing seasons.
The character world, told through posters
and artwork made for the screen.

HITM Discord community poster featuring Haruka and Yoru with bold black and white typography — 01 / COMMUNITY
Heartbeat in every key.

Haruka TR88H launch poster with a classroom illustration and pink and purple graphic accents — 02 / HARUKA / LAUNCH
Freshly radiant.

Aristella teaser poster pairing her futuristic and maid character designs with green accents — 03 / CHARACTER TEASER
A first look at Aristella.

Yoru campaign poster with layered portraits and cyan and purple typography on a black backdrop — 04 / YORU / CAMPAIGN
Miss me?

HITM poster featuring Yoru and Haruka in maid outfits against pink and teal graphics — 05 / SEASONAL ARTWORK
Only for tonight.

HITM 2026 new year poster with Yoru and Haruka in floral kimono against a warm architectural backdrop — 06 / NEW YEAR
New dawn, eternal grace.