Mark’s personality Mark is a charming character who brings a unique vibe and a striking contrast to the group. The cool‑and‑goofy gap At first glance, he appears calm and composed, but when he goes off the deep end, he unleashes hilarious antics, displaying a highly humorous nature. Thoughtfulness and strong professionalism In past videos and stories, he has demonstrated a kindheartedness that puts others before himself. For example, during his days working part-time delivering food via Uber Eats, even after his scooter broke down, he carried the orders through the rain for two kilometers, determined to complete every delivery—a testament to his strong sense of responsibility and integrity. A pragmatic outlook that values the present Rather than placing excessive hopes on the future, he believes we should live in the present and face our current challenges with honesty, embodying a grounded and principled mindset. Mark’s background Harsh part-time work experiences (building mental resilience) Before becoming a YouTuber—or during his early days—he worked diligently as an Uber Eats delivery driver. He recounts that enduring grueling deliveries on rainy days when no other riders were around, or pushing through difficulties like those mentioned above, helped him build mental toughness. Deep bonds with the members Although Nishikori consists of four members who differ greatly in background and personality, Mark has forged such deep trust with them that they can openly share their true feelings—even arguing at times. Their relationship is so strong that they can bravely discuss even difficult topics; Mark himself was moved to tears by how much they care for one another.
Height: 183 cm Weight: 66 kg (based on past livestreams) Hair: Long, messy style or center-parted; sometimes dyed blonde for video projects Clothing: Often seen in street‑style looks or casual sweatshirts and T‑shirts, with a stylish flair as a signature touch.
Event content such as “Nishikori Academy” Within the group’s event series “Nishikori Academy,” Mark plays the role of a chemistry teacher, showcasing his individuality within the content. Additionally, fan‑oriented merchandise like photo cards and trading cards have been released, further boosting his popularity.

Personality: Despite being somewhat rough-and-tumble, Eudai is also stoic and sensitive. Members and the media describe him as having a charmingly contrasting personality: “a rough-and-tumble side” paired with “sensitivity.” According to Kasuke, one of the members, “He does have that ‘rough-and-tumble’ side, but he’s also remarkably meticulous when it comes to self-improvement.”
While extremely disciplined about self-improvement activities like working out, he also displays thoughtful consideration and a highly sensitive nature. A gifted trilingual, he presents a bright and energetic persona in his videos, yet he can fluently speak not only Japanese and English but also Portuguese—making him a true trilingual (a speaker of three languages).
Strong sense of responsibility and customer-first mindset: In stories about past hardships—such as his days as an Uber Eats delivery driver—he once prioritized customers over his own needs, carrying deliveries by hand for two kilometers through the rain until he completed the route. This episode vividly illustrates his earnestness and strong sense of responsibility.
Background and career: The group’s origins and journey began at Senshu University. Here’s a glimpse into their background and experiences: All members, including Junji, are graduates of Senshu University, and their bonds formed during university serve as the foundation of the group.
YouTube debut sparked by the pandemic: Activities officially kicked off when leader Eudai encouraged everyone to start creating content during the monotonous days of remote classes brought on by the COVID-19 crisis.
Height: 186 cm (among the tallest in the group) Weight: Not publicly disclosed (based on previous character descriptions, around 85 kg) Hairstyle: A neat short mohawk or a style with bangs swept down Clothing: Simple, mature casual outfits that highlight his height, as well as sporty streetwear.
A turning point in their breakthrough: Unique videos featuring Junji’s Portuguese and Keita’s Tsugaru dialect clashing unexpectedly gained attention on TikTok. Looking back, he credits his tough early days as an Uber Eats delivery driver—with its grueling demands—for shaping his resilient mindset today.

Keita (Aomori Prefecture Resident) – Basic Profile Full Name/Pseudonym: Keita (often appears in videos as “Aomori Prefecture Resident” on screen) Hometown: Aomori Prefecture (bilingual in standard Japanese and Tsugaru dialect) Blood Type: AB Height: 182 cm Education: Graduated from the Faculty of Economics, Senshu University
Past & Background Club Activities During School Days: While a student, he was a member of both the swimming club and the baseball club. He possesses excellent athletic ability, making the most of his tall stature (182 cm).
How the Group Was Formed: As a first-year student at Senshu University, he met leader Eudai, Mark, Junji, and others, becoming what’s known as the “itsumen” (regular members). After graduating, they officially launched their YouTube group “Nishikori,” turning their differences in language and culture into entertaining content.
Tales of Uber Eats Struggles: At one point, he worked as an Uber Eats delivery rider. On one occasion, when his scooter broke down during deliveries, he prioritized the customer by carrying the order through the rain for two kilometers to make the delivery—a story that highlights his strong sense of responsibility.
Personality & Traits The Group’s Most Level-Headed Member: Among Nishikori’s colorful, larger-than-life personalities, he stands out as the group’s sole reliable voice of reason and comedic foil.
Gentle and Kind, Yet Scary When Angry: Usually very gentle and kind, he’s also regarded by his teammates as “the scariest person when provoked,” serving as a pillar who keeps the group’s delicate balance intact.
Height: 182 cm Weight: Not publicly disclosed (a sturdy build; some unofficial profiles suggest around 89 kg) Hairstyle: Natural messy hair or styles with defined ends Clothing: Casual outfits in subdued colors. In videos, he often wears school uniforms—such as blazers or gakuran—which have become familiar to fans.
Deep Love for His Hometown (Aomori): Throughout his videos, he frequently showcases his thick Tsugaru dialect and even earns praise from etiquette experts for his polite yet unique mannerisms. He actively participates in local popularity surveys and community events back home.