If you ever wanna just play with a CV bank and do random stuff feel free to use my UTAU. Only one person actually used it besides me and I'm not that active really.
But it's always nice to have some spare male voicebanks.
CV JP voicebank
utaforum.net
I reccomend downloading the 2023 file.
also works in open UTAU if you set the Phonemizer to JA VCV & CVVC