The keyword refers to the studio Giga , a production company famous for a very specific niche: "Tokusatsu" (Special Effects) and Heroine content.
Unlike many performers whose visibility is confined strictly to adult media, Hatano successfully transitioned into mainstream entertainment across Asia. She has appeared in: Tre-55 Vol.55 Yui Hatano Giga
Owning is only half the battle. Watching it correctly is the other half. The keyword refers to the studio Giga ,