Hello, since game is in very early stage of development, what roadmap plans it has, what fetishes will be added, how much choices (if any) player will have?
How I see it, Yurika should have multiple ways to complete missions, enforcer, breaking in and knocking out guards to intimidate and get information, stealth, using cunning and stealing access cards to infiltrate into buildings, and honeypot, seducing and using her body to manipulate people.
If she's agent, it should be her decision to use sex as a tool, choosing if it's worthy to let grope her ass or suck on her tits to get what she needs, or even agree on rough anal if she'll earn really useful data.
Also game called "Sexy Spy", so if she decides to fuck her way through by sleeping with VIP target, she should perform recon to gather info about what he likes, cause such people has more then enough pussy, so she needs to do her best to attract his attention.
Does he likes blondes or redheads, piercing and tattoos, leggings or mini-skirts, maybe he likes sluts who can cum from anal or maybe he likes intentionally knock his bitches pregnant. It can be missions where Yurika can change her appearance to get into target's pants, or just infiltrate his house at night and break open his safe.
Recently I read about huge amounts of Chinese female sex spies that were sent in USA, EU and Japan, You can search for it for inspiration.
P.S. Make ugly bastard to be nicest kindest guy in the game, who simply dreams of romantic relations with a girl who loves massive creampies.