Character technology studio

AI characters with voice, memory, and presence.

Koro Interactive builds AI characters — real-time speech, an animated face, memory that lasts months — and operates them across product and social. Designed, engineered, and run in-house, end to end.

Nari and Yume — NariYume Live2D character in-app In-character conversation

Design

Original characters, or your existing IP — rigged, voiced, and written with a consistent persona.

Build

Voice, animation, and memory integrated into your app, site, or kiosk — on-device or cloud inference.

Operate

Automated, in-character social presence across platforms — posts, storylines, replies — run as a managed channel.

The stack, in one place.

One character definition, deployed everywhere it needs to exist.

Real-time voice

Neural TTS at ~150 ms per reply, lip-synced to the character. Runs on-device with no per-message API cost, or hosted when you need central control.

Animated presence

Live2D, or a rig built from your existing character art. Expression and reaction driven by conversation state.

Long-horizon memory

Facts, moods, and relationships that persist across sessions and months. The character remembers the person, not the last message.

Character runtime

Persona-consistent conversation on every surface — in-product, social, kiosk, support.

Integration

Web embed, iOS and Android SDK, REST API. Designed to sit inside an existing product — integration is measured in weeks, not quarters.

Work & solutions

Built and operated by the studio.