Gunjo
Founded in 2008, a hidden tsukemen shop on Renga-dori street near Tenjimbashisuji Rokuchome Station. No sign, no noren curtain — you have to know it's there. Counter-only (7 seats), with a completely daily-changing menu announced via Instagram. 9 consecutive years in Tabelog Ramen OSAKA 100 Best (2017-2025).
Tabelog 3.74 (750+ reviews). Multiple sources confirmed 'no sign, no noren, only faint writing of Gunjo visible inside.' Repeat visitors queue before opening for daily menu. 9 consecutive years in the top 100 through word-of-mouth alone.