HENkaku is a native Homebrew Enabler for the PS Vita and PS TV. It lets you run homebrews on the PS Vita
Works like a charm with the version of Onikakushi I already owned from GOG, fantastic work! Would you ever consider porting Mangagamer's release of Umineko as well? I'm aware you can already run the VNDS conversion, but that's only compatible with the outdated Umitweak translation.