Ex-Hakuho's Isegahama stay extended + other Sumo News (May 31st)

The Isegahama Group reports that Miyagino Stable is "not yet ready" to re-form; Kotoeko heads home to Miyazaki; Onokatsu graduates sumo school with flying colors; new Wakamotoharu merchandise released; and Hakuyozan teaches us an old Japanese proverb (classic bout highlights added).