Celebrating 6 Years: slash kawasaki’s First Artist Collaboration with Chiaki Harada
Hotel-industry first: Illustrator Chiaki Harada × lifestyle hotel slash kawasaki
At slash kawasaki, we regularly collaborate with up-and-coming artists to bring bursts of color and creativity not only to our guests but also to the local community. For our 6th anniversary, we’re taking this a step further with a hotel-wide collaboration themed around “colorful,” brightening every corner of the space with art and imagination.
This time, our collaborator is illustrator Chiaki Harada, known for her bold use of pop colors and strikingly sharp messages that always resonate. Calling herself a “maker of rude lines for good kids,” Harada captures the gloomy, stuck feelings we sometimes hide inside, transforming them into vibrant works full of wit and honesty. She is one of today’s most talked-about illustrators, with a portfolio ranging from the EXPO 2025 Osaka-Kansai art project “Co-MYAKU’25” to book covers and product design.
Through this collaboration, slash kawasaki will be filled with Harada’s unique energy, featuring original illustrated goods, limited-edition room plans with exclusive items, and a collaboration café. It’s a special program designed to transform the entire hotel into her world of color and character.
Original illustration “A place to be selfish”
Most of our guests are in their teens and twenties. They love using the in-room projectors to dive into their favorite movies, enjoy fan activities, and simply spend time surrounded by the things they love.
For this collaboration, illustrator Chiaki Harada has captured that feeling — the joy of focusing completely on “what you like” without worrying about the outside world. It’s exactly the kind of time our guests experience at our hotel.
As the year-end season approaches and life feels busy and rushed, many of us long for a place to slow down, be ourselves, and do what makes us happy. At slash kawasaki, that’s what we provide — and through Harada’s colorful world, we’re delivering that experience in an even more vivid way.
Limited-Time Room Signage & Special Stay Plan
To celebrate this first-of-its-kind collaboration with Chiaki Harada, we’ve created a special stay plan along with exclusive room-number signage. Guests will be able to immerse themselves in Harada’s unique world not only through goods and events but also as part of their actual stay experience.
■ [One group per night only!] Collaboration room plan
We have prepared room plans that include limited goods and a collaboration drink. Enjoy Harada’s world throughout your stay.
Room plan details
- Plan name: 6th Anniversary Plan (with breakfast) / 6th Anniversary Plan (room only)
- Plan benefits:
- One original drawstring pouch per guest
- One original illustration-printed chocolate (More Than Chocolate) per guest
- One collaboration cocktail (or mocktail) per guest
- Sales period: Friday, October 17, 2025 – Saturday, November 29, 2025
- Stay period: Friday, October 17, 2025 – Sunday, November 30, 2025
- Price: From ¥16,000 per room for two people
Book the plan with breakfast here
※Please select your preferred stay date on or after October 17, 2025, to check availability.
■ Room Digital Signage
The hotel make use of digital tools to create one-of-a-kind guest experiences. One example is our digital room number plates, which we’re transforming for this collaboration.
From Saturday, November 1 through Sunday, November 30, 2025, staying guests will be able to enjoy three brand-new illustrations along with a selection of past works by Chiaki Harada displayed on the signage.
Even the short walk from the elevator to your room will be brought to life with Harada’s bold colors and striking messages, turning an everyday moment into part of her vibrant world.
About sales of original goods
Starting Saturday, November 1, 2025, exclusive collaboration goods will be available at slash kawasaki’s ground-floor shop and through our online store.
Long-Sleeve T-Shirts (2 designs) — ¥4,000 each
Two original designs feature bold back prints: “A place to be selfish” and “Delicious food, fun places.” Both capture the playful, expressive spirit of this collaboration.
Original Stickers (5 designs) — ¥200 each
These vibrant stickers showcase slash kawasaki’s unique illustrations. Slip one into a clear phone case, decorate your luggage, or add a touch of personality wherever you like — the options are endless.
Enjoy Harada Chiaki’s world through food at the collaboration café
On the hotel’s ground floor, slash cafe & bar kawasaki will host a special collaboration café where guests can step into Chiaki Harada’s colorful world through food.
Usually inspired by an American diner concept, the café will transform three fan-favorite items — burgers, hot dogs, and ice cream sundaes — into vibrant, themed dishes that bring Harada’s pop colors to life. Each plate will be served with an exclusive illustration, making the experience as visual as it is delicious.
To complete the set, we’ll also offer melon sodas and cocktails in multiple color variations, each served with a coaster featuring Harada’s artwork.
Inside the café, panels showcasing Harada’s art and messages will be displayed throughout the space. Take photos with the playful dishes, read and connect with the thought-provoking messages, or go on a hunt around the hotel to spot items featured in the illustrations. The collaboration café invites you to enjoy slash kawasaki’s space in your own colorful way.
Collaboration café details with Chiaki Harada
- Service period: Saturday, November 1, 2025 – Sunday, November 30, 2025
- Service hours: 11:30 – 14:00 / 17:30 – 22:00
- Location: slash kawasaki 1F, slash cafe & bar kawasaki
- Prices:
- Food menu
- Just a Plain Black Hot Dog (image, lower row center) — ¥1,400
- Be Selfish Just Today Sundae (image, upper row left) — ¥900
- Red-Hot Cheese Burger (image, upper row right) — ¥1,700 ※
- Macarons & Little Happiness (image, lower right) — ¥500 ※
- Drink menu
- Exciting Rouge Cocktail (image, red drink upper row) — ¥950 (available non-alcoholic)
- Blue Magic Moment Cocktail (image, blue drink upper row) — ¥950 (available non-alcoholic)
- Exciting! Melon Soda (image, green drink lower row) — ¥950
- Food menu
※The Red-Hot Cheese Burger and Macarons & Little Happiness are limited items available only on Saturday, November 1 and Sunday, November 2.
Chiaki Harada in residence — portrait drawing event
On Saturday and Sunday, November 1–2, 2025, Chiaki Harada will be in residence for a portrait drawing event and signing session.
About the in-residence signing
Guests who buy at least ¥3,000 (tax included) in slash kawasaki × Chiaki Harada collaboration goods or Harada’s original goods on the event days are eligible.
*Hotel charges, food and beverage charges, and slash kawasaki original hotel merch are excluded.
- In-residence hours:
- November 1 (Sat) 13:00 – 17:00
- November 2 (Sun) 12:00 – 17:00
About the portrait drawing event
- Event times:
- Nov 1: ①13:00 ②14:00 ③15:00 ④16:00
- Nov 2: ①12:00 ②13:00 ③14:00 ④15:00 ⑤16:00
- Advance reservation required (reserve here)
- Price: ¥5,000
On November 1–2 we will also hold the in-hotel event “COLOR ME SLASH”!
In addition to the collaboration with Chiaki Harada, on Nov 1–2 we will hold the hotel’s 6th-anniversary event “COLOR ME SLASH.” The program will include a dip-flower workshop by dried-flower specialist cuccuma, a colorful vintage-clothing display and sale by popular Kawasaki second-hand shop PINKVIBES, and more. From 17:30 we will screen films on our 10th-floor terrace, which is usually available only to hotel guests. Enjoy movies in the open rooftop atmosphere.
Please spend two colorful days where we add bright color to the usual slash kawasaki vibe.
Profile: Chiaki Harada
Illustrator, manga artist, columnist
Chiaki Harada transforms the gloomy feelings hidden inside everyone into bold, colorful works. Her style often mixes retro, celebratory, and even horror-tinged elements, giving her illustrations a unique edge.
Known by the tagline “a maker of rude lines for good kids,” she has been active since 2019 as a lecturer at Kyoto University of the Arts, while continuing to create her signature rich, gooey, and vibrant pieces that explore the negative emotions people carry.
Her work extends far beyond illustration. From appearances on film, TV, and radio to running collaboration cafés, designing for apparel brands, and even performing in bands, she is active both in Japan and abroad across a wide range of creative genres — always open to anything that sparks her curiosity.
About slash kawasaki
slash kawasaki is a new kind of hotel — a true “digital hotel.” Designed from a digital-native perspective, we use technology in creative ways to offer guests unique experiences: digital art installations throughout the hotel, iPad check-in, rooms you can control with your iPhone, and in-room projectors that mirror your phone screen.
Our 95 guest rooms are compact but cleverly designed to balance comfort and entertainment. Each room features separate shower, toilet, and sink areas for convenience, along with bed mechanisms and IoT experiences inspired by the smart pod system of our sister brand, The Millennials.
<Facility Information>
- Facility name: slash kawasaki
- Address: 2-9-7 Sunako, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-0006
- Access: 5 minutes on foot from JR Kawasaki Station East Exit