Alright, guess I better talk about the relationships Lisa will have.
@Ehb
Sagawa Mizunohara / Positive / New Friends
I get the feeling they would've met at the beginning of the school year (Or at cram school or something if we're starting at the beginning of the school year.) and they hit it off well.
@God Empress Wen
Kira Oshiro / Positive / Aquainted
Nothing much here, maybe Lisa helps Kira with her homework or something. Can't think of anything else at the moment.
@Weisenhart
Yura Yukitani / Romance / Arranged Romance
Like I said, maybe their parents knew each other and saw how the two got along so they decided to arrange the marriage? Lisa isn't sure what to make of that, though, and things might be a little awkward between them.
@LowDefinition
Yuuki Iwasawa / Positive / Childhood Friends
Nothing much here either, considering they knew each other since they were young.
@Makomin
Misheru Tachibana / Negative / Betrayed
I don't know much about your character yet, sadly, so I have no idea how this will work. EDIT: Just read what you wrote down for Lisa, I think that'll work fine.
@ERode
Yuuki Kimura / Positive / Amiable Classmates
Lisa probably helps out with Yuuki's homework as well. Or we can go with the awkward volunteering, that'll work.
@LoveandHate91
Sein Ravel / Negative / Broken Friends
Again, I don't know your character yet so I'm not sure how to proceed with this. Maybe one of them broke a promise or something?
@Zombehs
Abe Kuroya / Positive / Middle School Friends
Self explanatory here, they knew each other since middle school.
@Andy
Noxi Keoni / Negative / Mututally Annoyed
I don't know how this will work since I don't know your character yet, maybe it's an odd habit from the other they dislike?
@Accelerator
Michio Kamijou / Negative / Irrelevant Friendship
Maybe Lisa got busy with her work and filming habit to keep up with the friendship?
@Miya
Lori Nishimura / Negative / Bad Occurence
I have no idea what caused this. Maybe one of them was pushed into an embarrassing situation by the other?
@Raven Haruka
Chiyo Imada / Positive / Childhood Friends
Self explanatory, they were friends since childhood.