The rival character of Heartbreaker: Episode 9.

Wiki: Ganko Ushi | Abyzouverse Wiki | Fandom

Ganko is a member of the Metal Club, who loves working the forge and building things.

She mostly speaks with a very loud voice as she has no awareness of her own strength, size or volume.
Ganko is a "gentle giant", not very bright but with a heart of gold - She's very kind but very gullible.

She is approximately 20-21 years old.

The best reference I can think of is Sheeva: Mortal Kombat 11: Aftermath - Sheeva Voice Sounds and SFX (youtube.com)

With the energy of 0:18 here: Black lagoon omake EP:1#blacklagoon #blacklagoonanime #blacklagoonrevy... | TikTok

• She should speak in a typical London accent - not posh, not cockney, just sort of "standard" as shown here: https://www.youtube.com/watch?v=DB8l4Ok1QJw
• Her voice should be deep (believably, not cartoonishly) and a tone that emphasizes that she is very dumb (again, believably, not cartoonishly).
• A native British voice would be preferable, unless one can perform the accent convincingly.

Due to this game's extremely dark & disturbing themes, the prospective VA must be comfortable with performing sounds of crying, fighting, pain, death and torture, with mouth-gagged variants. This particular character will have one of the most brutal optional deaths in the game that will require a blood-curdling scream along the lines of Kokona buring to death sound (youtube.com)

How to pronounce Kouhai: Google Translate