From what we under-stand Oguni's reason for vacating has mirrored that of Wake, who incidentally is the only man to defeat Oguni so far, and it seems both men want to focus on world title aspirations.
Oguni won the title last December, winning a razor thin decision against Yasutaka Ishimoto. As the champion he defended the title twice, fighting to a draw with Gakuya Furuhashi and scoring a decision victory over Taiki Minamoto.
At the time of writing Oguni holds several world rankings, though we're unsure whether he has a world title fight actually in the works or is looking to focus on things like getting himself an eliminator, rather than continue looking at the domestic picture which is seemingly in a state of major change with the emergence of Shun Kubo, Sho Nakazawa, Yusaku Kuga, Hikaru Marugame and Kazuki Tanaka
Shingo Wake set to vacate the OPBF Super Bantamweight title, still has eyes on world glory
Shun Kubo to face Lloyd Jardeliza for OPBF Super Bantamweight title!