VERSION 2.0 WITH BROWN CAMOUFLAGE AND MORE DETAILS AND BETTER INTERIOR IS COMING LMAO (Its out like 2 months lmao)

The Type 4 Ho-Ro was a self-propelled gun that saw limited production and service by the Imperial Japanese Army in the Pacific Theater during World War II. The armament of the Ho-Ro was the Type 38 15 cm (5.9 in) howitzer , which was also based on a German design by Krupp. The gun had previously been withdrawn from service in 1942 as it was deemed outdated, being a 1905 design.
The surplus guns were brought back into service and mounted on the Ho-Ro. The ammo of choice for the Type 38 gun was the Type 88 APHE (Armor-Piercing High-Explosive) shell. It could also fire HEAT (High-Explosive Anti-Tank) if necessary. The gun was capable of firing one of these 36 kg (80 lb) shells at 282 m/s to an effective range of 6,000 m (6, 542 y). Ammunition was stored in a container on the engine deck.

Source: https://tanks-encyclopedia.com/ww2/japan/type-4-ho-ro/