Joukyou Kaishi! is a Military Educational Institution adventure PC game by Kogado Studio, released on Dec 16 ,2005.

The following firearms were seen in the video game Joukyou Kaishi!:

Rifles

Howa Type 64

The Howa Type 64 seen on top of the shelf at the top left.

Howa Type 64 in 7.62x51mm

Seen on top of the shelf, top left.

Howa Type 89 present in this game.

Howa Type 89 with integral bipod and bayonet - 5.56x45mm

Howa Type 89 in 5.56x45mm with integral bipod. Currently in use by the Modern Japanese military.

Mk 2 hand grenade is availible to player.

Mk 2 "Pineapple" High-Explosive Fragmentation hand grenade

M47 Dragon is seen on the the locker.

M47 Dragon ATGM with SU-36/P daysight and front shock absorber detached- 140mm