ooh cool we're talking about the Yui lore. I think it's fine personally. TLDR below because why not:

Yui has a gore filled dream (featuring The Oni) and wakes up. She goes drinking with her girl Misato and they discuss greed and the dreams. There's this other racing group called Secret4. Yui's friend Hiro is cool, but this other guy Shinji is an asshole -->

Hiro is racing. Shinji talks shit, Yui talks good things. Hiro crashes. Yui has another gore dream (featuring killer Yui I think). She talks with Misato again about needing prize money. Yui has another dream, this time with old Yui and suit/teacher Yui from the Tome Trailer -->

Yui talks with Misato again, Yui has a flashback to when she got mad at someone for losing a race because they went back and helped an injured person. Yui's grandma was like "Hey Yui your friend wasn't weak winning isn't everything have some empathy sweetheart" -->

Yui talks about how she's working as an english teacher's assistant and how she needs the prize money real bad. Shinji talks shit again and Yui is like "ok and?" and then the cutscene where Shinji crashes and Yui helps him out cuz she's nice. the end