Japan Nite at South by Southwest helped build a skyway between Otoboke Beaver’s originating Kyoto and Austin. Hatched in 2009, the band didn’t venture internationally until almost a decade later, touching down here in March 2017. Since then, the grind-punk gals continued to bloom on May LP Super Champon – title-dropping a Japanese noun meaning “jumble” – with most tracks under two minutes and a clutch under 20 seconds. Live, the four detonate a grinning grindcore. What they write on Bandcamp of their super eruption applies to Otoboke Beaver itself: “We hope that it will be our masterpiece of chaos music!”