星野すみか is a gentle, slice-of-life companion on Prelulu, an AI character-companion app where you can hold real-time video calls with AI characters. Designed around slow-burn pacing, her setting centers on a coastal planetarium dome over Shiranagi. You can exchange daily text messages or start a face-to-face video call to speak directly with her in real time.
Who is 星野すみか on Prelulu?
星野すみか is an original companion character on Prelulu, designed for readers who prefer unhurried, slice-of-life conversations over melodramatic tropes. Her scenario begins when the planetarium projector hums down into silence, leaving only you in the darkened coastal dome. Rather than hurrying you out into the seaside evening, Sumika pauses beneath the soft hall lights, gathering her notes by the observation terrace doors as the real night sky over Shiranagi opens just beyond the glass.
You can explore her quiet coastal setting directly through 星野すみか's profile. Her character focuses on gentle observation, astronomy discussions, and subtle interpersonal warmth without artificial urgency or sudden conflict.
How live video calling works with 星野すみか
Prelulu enables live video calls where the character answers you face to face in their own voice, with their face and delivery carrying emotion as they speak. When you initiate a call from Sumika's profile on Web, iOS, or Android, the interface transitions from text to an interactive visual display. As you talk about the stars or her shift at the dome, you can cut in mid-sentence to steer the discussion, just like an ordinary conversation.
Your personal privacy settings remain entirely under your control throughout the session. Your camera stays off by default unless you choose to turn it on, and where camera sharing is available, it requires your explicit device permission. Learning the interface flow of an ai video conversation helps set expectations: seeing Sumika respond on screen does not require exposing your own video feed.
The difference between text roleplay and real-time avatar calls
Prelulu provides both text chat and real-time avatar calling, but they serve distinct roleplay needs. Text messaging allows measured, paragraph-length scene construction where you can deliberate over your phrasing at any hour. The free plan on Prelulu includes a limited daily text allowance, giving you space to build rapport with Sumika before taking the scene further.
Voice and video calls use credits instead of the daily text quota. During a live call, the pacing shifts from reflective prose to synchronous interaction: Sumika speaks aloud, reacts directly, and responds to your spoken voice. Exploring how an ai character chat with a live video call differs from standard text helps clarify when to write out a scene and when to call.
Separate chat and call memories, with shared Pinned memory
Prelulu keeps chat and call memories separate, and recall remains selective. Calls can recall earlier calls, but visits to the Shiranagi dome or constellation discussions established only in text do not automatically surface. Add chosen details to your Pinned memory to make them available in both formats.
Understanding this nuance keeps roleplay smooth. Because memory selects salient facts rather than retaining every stray phrase, reiterating subtle plot points naturally in conversation ensures Sumika keeps your shared narrative aligned across sessions.
Platform availability and credit structure across devices
Prelulu is accessible on the Web (prelulu.ai), iOS via the App Store, and Android via Google Play. As of October 14, 2026, more than 100 characters in Prelulu's public catalog can be video called, and the prelulu.ai website interface is available in 27 languages. You can browse characters, review their profiles, and test interactions across any supported device.
To participate in live calls with Sumika, you manage your balance through the app or by checking current options on the pricing page. Any introductory credit gift or daily voice allowance is visible in your account wallet. Because live video calls require active credits, budgeting your time lets you enjoy longer, contemplative stargazing sessions without interruption.
Where the quiet planetarium format stops fitting
星野すみか is designed specifically for slow-burn, atmospheric companion roleplay, which means her scenario does not fit fast-paced action, high-intensity conflict, or immediate dramatic revelations. If you prefer high-stakes plots, aggressive rivalry, or rapid romance, her coastal planetarium setting will feel deliberately restrained.
Similarly, a live video call is a real-time spoken dialogue, not an archive of downloadable video clips. If your goal is generating static image galleries or reading long literary descriptions of external action, Prelulu's text mode or alternative companion platforms will better match your expectations.
Meet your AI character face to face
Choose or create a character for live video chat, roleplay, shared stories or company. Check the available call credits and plans before starting.