Pronunciation: Jin Ee-boo-she
Gin Ibushi is the youngest participant in the death game, being 12 years old. He is one of the last of the group to introduce himself, and once he realizes that Sara and Joe aren't threats, he starts to call them 'big sis' and 'big bro' respectively. Those aren't the only people he likes to call 'big sis' or 'big bro.'
In my opinon, Gin should have a medium-high voice, that actually sounds like a 12 year old, but still matches his appearance.
Using a Danganronpa character for reference, Gin should have voice like Masaru Daimon from Ultra Despair Girls.