345

Born in Chichibu in 1983, 345 is a Japanese bassist and vocalist known for her dynamic performances. She is a central figure in the acclaimed three-piece rock band Ling Tosite Sigure, where she handles both vocals and bass guitar. Beyond that prominent role, 345 also contributes her talents to the rock band geek sleep sheep and the acoustic unit ti-ti.uu, showcasing a versatile musical range. As of 2026, she continues to tour and record with all three projects, maintaining a dedicated following in the Japanese alternative rock scene.[edit]

345 grew up in Chichibu, a city in Saitama Prefecture surrounded by mountains. Her early interest in music began in her teenage years, drawn to bass guitar and the sounds of Japanese alternative and indie rock. She connected with guitarist TK and drummer Pierre Nakano in the early 2000s, and together they formed Ling Tosite Sigure in 2002. The band started as an indie act, releasing early demos and playing small venues in Tokyo's underground rock scene. Their debut independent album, #4, came out in 2005, building a cult following before they signed with Sony Music Japan in 2007.[edit]

In 2007, Ling Tosite Sigure released their major-label debut, Just A Moment More Ripples, which brought wider attention to their math-rock sound. The band followed with Inspiration is Dead in 2008 and still a Sigure virgin? in 2010, each album refining their complex, layered style. Their fifth album, I'mperfect, released in 2013, became a commercial success and included the single Enigmatic Feeling, used as the opening theme for the anime Psycho-Pass 2. That same year, 345 formed her side project geek sleep sheep, exploring a more electronic and melodic direction. In 2016, she launched the acoustic duo ti-ti.uu, allowing her to perform intimate, stripped-down arrangements. Ling Tosite Sigure released #5 in 2018 and last aurorally in 2020, and celebrated their 20th anniversary in 2023. As of 2026, 345 remains active with all three projects, continuing to tour and release new material.[edit]

345 is known for her dark, minimalist fashion on stage, often wearing black clothing with long straight hair. Her bass guitar is a central visual element. The Japanese music media portrays her as a talented but enigmatic figure, often described as mysterious or reclusive. She gives very few interviews and keeps a low profile. Her social media presence is minimal and professional, with infrequent posts on Instagram focused on band activities. Fans admire her technical bass playing and vocal harmonies, and live performances are known for high energy and crowd engagement. There is no official fandom name for her individually.[edit]

345 has cultivated a deeply loyal following within the Japanese alternative rock scene, though her global footprint remains distinct from the mainstream pop juggernauts. She is currently evaluated by iFANN but does not hold a placement in the published Global Top 1,000 rankings or any scope-specific top lists. This unranked status reflects a career built on critical acclaim and dedicated niche support rather than viral ubiquity. Her fame is anchored in her dual role as the bassist and vocalist for Ling Tosite Sigure, where her technical prowess and enigmatic stage presence have secured her a legendary position among math-rock enthusiasts worldwide. While she lacks a formal fandom moniker documented in authoritative records, her supporters are known for their intense appreciation of the band's complex rhythms and atmospheric textures. The audience often engages with thematic campaigns initiated by the group, such as the "still a Sigure virgin?" movement, which highlights the community's active participation in welcoming new listeners. Unlike stars who rely on constant social media engagement, 345 maintains a low profile, allowing her music and live performances to speak for themselves. This restraint has only deepened the mystique surrounding her, drawing fans who value artistic integrity over celebrity spectacle. Her influence extends beyond Japan, with international tours receiving widespread praise for their raw energy and sonic depth. The lack of a specific numeric rank underscores that her legacy is defined by the quality of her output and the enduring passion of her fanbase rather than fleeting metrics of global popularity.[edit]

Her stage name 345 serves as a simple numeric identifier whose exact origin she has never fully explained in interviews, adding to her mystique. She stands out as one of the few female bassists and vocalists navigating the complex rhythms of the Japanese math-rock and post-hardcore scene. Her side project geek sleep sheep offers a stark contrast to Ling Tosite Sigure, exploring more electronic and atmospheric textures, while the acoustic unit ti-ti.uu reveals a softer, guitar-driven side of her musicianship. Fans often note how her voice sounds angelic during intense tracks like Loo% Who%, creating a striking juxtaposition against the band's aggressive sound. A foundational story from her early history involves meeting vocalist TK at Toyo University before forming Ling Tosite Sigure in 2002; they previously played together in a cover band named Calorie 0 performing GO!GO!7188 covers in 2001. Although there are no viral legends or extraordinary crowd incidents specifically centered on her individual persona, her role as a core member of the trio is legendary in its own right. The band's return to London's Inigo at the O2 in July 2015 was widely praised, with critics describing them as a most enigmatic live act. These verified milestones, from university beginnings to international stages, form the bedrock of her legacy without relying on fabricated folklore. A specific piece of band lore mentions that 345 gave drummer Pierre Nakano his nickname because she called him a "pierrot" when he spun his drumsticks during practice. Additionally, the band released a song titled "Am 3:45," which likely references her stage name and was featured in their "DEAD IS ALIVE TOUR 2022" live set at Haneda Zepp.[edit]

345 is intensely private about her family. No details about her parents or siblings have been publicly disclosed. She grew up in Chichibu, Saitama, but has not shared information about her household or upbringing beyond that. As of 2026, she has not publicly mentioned having a spouse, children, or pets.[edit]

345's primary collaborator is TK (Toru Kitajima), guitarist and vocalist of Ling Tosite Sigure, with whom she co-writes and performs. Drummer Pierre Nakano rounds out the trio. In her side projects, she works with members of geek sleep sheep and ti-ti.uu.[edit]

345 has kept her romantic life entirely private. There are no confirmed public relationships, marriages, divorces, engagements, or high-profile flings reported by credible sources. She has never been photographed with a romantic partner in a dating context, nor has she made public statements about a partner. As of 2026, her relationship status is unknown and presumed to be single.[edit]

345's net worth is not publicly documented by any major source. As a Japanese rock musician with a career spanning over two decades, her income comes from album sales, streaming royalties, concert tours, and merchandise. She also earns from her side projects geek sleep sheep and ti-ti.uu. No endorsement deals or business ventures are publicly known. Per iFANN's editorial analysis, her net worth in 2026 is estimated at around $2 Million.[edit]