BUR #18194 has been approved by @nonamethanks.
create alias gackpoid_(vocaloid3) -> kamui_gakupo_(v3_gackpoid)
create alias kamui_gakupo_(vocaloid3) -> kamui_gakupo_(v3_gackpoid)
create alias gackpoid_(vocaloid4) -> kamui_gakupo_(v3_gackpoid)
create alias kamui_gakupo_(vocaloid4) -> kamui_gakupo_(v3_gackpoid)
create implication kamui_gakupo_(v3_gackpoid) -> kamui_gakupo
I noticed the former derivative tag was under the product name instead. Similar to Gumi_(V3_Megpoid). His V4 has the same V3 design.