Help Identifying Vintage Coat with Multicolored Buttons (Japan, Late '90s–Early 2000s)

[magicinc]

Hi everyone,

I’m currently researching a vintage coat and would really appreciate any help identifying it or pointing me toward where I might find something similar.

Key details:

• Purchased in Japan, likely late 1990s to early–mid 2000s
• Relaxed, straight-cut silhouette, mid-thigh length
• Distinctive multicolored front buttons
• Large patch pockets at hip level
• Orange outer fabric with contrast cuffs
• No visible branding or labels

I’ve attached a reference image below. If anyone recognizes this style or can suggest websites, vintage shops, or forums where I might continue the search, I’d be incredibly grateful.

Thanks in advance for your time and insights!