Won’t be a complete experience, but most of it is still navigable, albeit slow. I’d be surprised if vk.gy hasn’t already archived all the artist-related info.
there’s also this, which is basically the database still intact, but not linked to the main website. Please be warned that clicking on other links throughout the site will redirect to the current Visunavi website, so keep the “visunavi-wp.appmlj.com” part whenever typing in the URL.
Update 4/1: late post, but Visunavi actually DID keep everything, here’s the OFFICIAL archive!