Not only just in Tekken 4, but Hwoarang actually makes Jin smile in Tekken 5 - more noticeable if viewed with the camera at its default during this scene : r/Tekken
Image 4 - Tekken 5 - Mod DB
Tekken Tag Tournament 2 Tekken 5 Tekken 6 Tekken 4, king, game, king, video Game png | PNGWing
SONY PS2 TEKKEN 4 5 & Tag & Hyper Street Fighter Ⅱ & Capcom VS. SNK 2 & EX3 set | eBay
most of you say tekken 4 is broken,but it's fine for me. : r/Tekken
Tekken 5 vs Tekken 4 - Best Video Quality Comparison 60FPS (PAL Version) - YouTube