Come to think of it I'd say I don't think it's possible. I've played Friendship + Corporate Route, Lust + Corporate Route, Lust + Patreon route and heck I've even played Corporate NTR route and I'm not even a fan of NTR.So just finished playing this one up till the current update (I remember this being one of the only games I deleted back in the day when it first came out at v.0.1) it has changed and grown a lot.
I see the dev is very active here, so I thought I'd ask him, or any players here that have played more routes than me (friendship/patron player here). One thing...
I know I am in the minority here, but what are the chances of this game getting eventually an ending where MC gets Sonya, and you push Christine and Jessica to be together ? They seem to both kinda want it, and it keeps the filthy garbage other males from touching either one. (Well Paul still gets to ram Julia).
Friendship route it's totally impossible because Chris is head over heels in love with you and if you say you don't want an exclusive relationship with her or say that you do and then cheat on her it's gonna have consequences.
Corporate Lust Route - Well Chris and Jessica are pretty much separated so the chances are bleak.
Patreon Lust Route - It's the most likely possibility but the route makes Sonya the tertiary girl.
Silver NTR - Now why did I play this route even though I don't like NTR? Well I don't specifically like Chris and I wanted to try to have a relationship with Jess without having to cheat on Chris. Now if Silver breaks Chris's heart, maybe Jessica could get close to her, but then I'm just speculating here.