Nika AI bundles three interlinked companion experiences under one account. The flagship, Nika, is an AI girlfriend designed for extended roleplay with more than twenty hand-written scenarios across nine genres. Sebastian is the male-lead counterpart with his own stories, opinions and gifts, available through Telegram. Aurora City turns the same engine into a dating simulator RPG where you build stats, take jobs, attend seasonal events and unlock dates, sleepovers and marriage across 30-plus relationship levels. The three share an engine built around memory you can actually control. Each story keeps three layers: the recent conversation, a rolling summary of everything older, and up to ten key facts you can read, edit, delete or pin. A 31-level relationship scale runs in both directions from Arch-Nemesis to Obsession, changing how the companion speaks and what they are willing to do rather than gating buttons. Companions also send photos in four art styles, reply with voice notes, and can write a diary entry or a chaptered novel based on your shared history. Access is unusually flexible: Nika runs as an Android app on Google Play, a web app that installs as a PWA, and a Telegram bot, with a single account shared across channels.
