World Underneath Chapter 30 — Fairnight's Edge — is the fifth and final chapter of the April 2026 World Underneath update, and the only one not focused on a specific love interest. The chapter centers on EonCore Tech, a major corporation in Linkon City that emerges as a key player in the post-Deepspace Era's technological race. The organization's Chief Director is depicted as a charismatic, mysterious figure whose identity and agenda are left deliberately ambiguous — later context reveals this was a setup for a sixth love interest (Valko) whose arc was announced June 22 and cancelled June 30, 2026, before v6.0 launched. Fairnight's Edge also includes a tease for an EVER collaboration arc, referencing the deep EVER lore threads running through the main story.