Koshimizu Toru

Who is Koshimizu Toru?

Koshimizu Toru is a Japanese VTuber affiliated with NIJISANJI who debuted on January 19, 2023 as part of the Idios unit.

She is presented as a laid-back, self‑directed hobbyist who loves games and music and is known among fans by the fan name Babumates.

Creator & studio

Toru is part of the NIJISANJI project operated by Anycolor. Her character design is credited to illustrator 椎花びび, also referenced as Vivi or vivivivi0808.

Visual Style and Aesthetics

Toru’s default look features short, muted blue‑gray hair with two distinctive hairpins and purple eyes with geometric highlights and diamond‑shaped pupils. She has a small beauty mark under her left eye.

Her usual outfit mixes sporty and street elements: a white jacket with purple trim over a cropped camisole, a below‑knee black wrap skirt with purple accents, patterned socks and legwarmers, and white sneakers with purple details.

Persona & Content

Toru’s on‑stage persona is cool, calm, and low‑key, often described as a ‘super NEET gamer,’ though she can become loud or excitable in surprising moments.

She frequently references specific tastes and habits such as a fondness for menthol flavors and caffeine, and she builds rapport with fans through long, endurance‑style streams and grounded, matter‑of‑fact commentary.

Her content mixes gaming and music interests, with extended play sessions, song covers, ASMR segments, and casual talk that highlight both skill and personality.

Content Type & Format

Koshimizu Toru produces longform live streams on YouTube that focus on gaming, free talk, and endurance sessions, often stretching into multi‑hour broadcasts and showcasing deep playthroughs or large creative builds.

She also posts shorter video content and song covers, participates in 3D debut performances and special video projects, and shares clipable moments that circulate on platforms like TikTok and X.

Koshimizu Toru’s personality shapes her content tone: calm and slightly dry in regular chat, intensely focused during gameplay, and warm or playful during collaborations and fan interactions, which keeps her videos and streams varied and engaging.

Koshimizu Toru Collaborations and Campaigns

Autumn & Winter Collection 2023: Dinamis x Koshimizu Toru — In October 2023 Toru was featured as a virtual model for Dinamis’s Autumn & Winter collection and related styling lookbooks. The collaboration showcased Dinamis accessories worn on virtual look images and promoted coordinating items, pairing product photography with Toru’s signature styling.

24 Nail Collection / Produced Nail Items: Dinamis x Koshimizu Toru — Dinamis released nail polish and nail oil items tied to Toru’s image and styling, with promotional visuals that paired the produced nail color with branded accessories and imagery.

ZIPPO Collaboration: NIJISANJI x Koshimizu Toru — A branded ZIPPO lighter featuring Toru’s costume motifs and fan mark was released as part of an official NIJISANJI ZIPPO collaboration in early 2024, distributed through official merchandise channels and sold as a collectible merchandise item.