Rain Noctis is Sylus's 2026 birthday event, running April 13–20, 2026. Like Rafayel's 'Each Step To You', it centres on a handmade plushie surprise, with a four-chapter storyline (chapters unlocking April 13, 15, 17 and the birthday on April 18) and the Treasured Threads tile-connecting mini-game, with currency spent at the Nightvibe Shop. The related Wish Pool is Rainlit Night, featuring the limited 5-Star birthday Memoria Sylus: Rainlit Night and the 4-Star Memories Gusty Rush and Gifted Arrival. Reading the fourth chapter unlocks the 'Lil Boss-Man' moment post; logging in between April 18–20 triggers the 'His Message' video call and a special Home interaction. A letter from Mephisto (assisted by two handsome translators) accompanies the event, and the Love Timeline entry 'Glow-up the City' is obtained on April 18 — the night MC makes all of N109 glow for him.