Fourth Super Real Mahjong game. Has six girls, three new ones that are main characters, and the other three are in a bonus round after completing the game. The three extra girls are Shōko from Super Real Mahjong PII and Kasumi and Miki from Super Real Mahjong PIII.
About the last picture, it was a glitched frame MAME put in the .mng video file, and when the framerate was reduced for GIF conversion, it was removed. So I thought I'd throw it in anyway.
Some of these animations are just adorable. I'd say the blue-haired chick is a total cockblocker, but seeing the cliffhanger on pic 21 I think it's fair to apply that to the whole game. In all honesty though, you're really doing a great service by uploading these obscure pieces of history: thank you.