You basically have to go one route at a time and there's 3.5 routes.
Colonel Route:
Go get interviewed nonstop, every day look for your wife before proceeding to get the notification that you can now see her sex scene in the recollection room.
Coworker Route:
Go talk to coworker nonstop, same thing. Find your wife every day before proceeding for the notif so you collect the recollection room stuff for later.
Rich Neighbor Naji Route*:
Go talk to neighbor or his butler nonstop, same thing. Find your wife before proceeding so you collect the sex scenes.
*ON THIS ROUTE THERE ARE TWO ENDINGS INCLUDING THE "happy" ENDING. SAVE BEFORE THE "FINAL MISSION" WHERE YOU LOCK IN A ROUTE.**
Neighbor boy will gift her outfits and you have to tell her they look bad on her. Yes. Telling her they look bad on her makes her love you more. Then you confront him about fooling around with your wife and you get a happy end where she has your baby.
Alternatively, tell her she looks hot in the sexy outfits and she falls for neighbor more.
**You have to replay the final mission for both routes. The progression is:
>save point
>final mission involving collecting red circles
>colonel is outed as framing you as a spy [LONG CUT SCENE]
>have dinner at neighbor's mansion[LONG CUT SCENE]
>not seen, neighbor gifted wife an outfit she's wearing at breakfast
>wife asks you about her breakfast outfit. THIS CHOICE MATTERS.
>wife sucks off neighbor under counter.
>save point.
To get all 4 endings you play thru colonel route, play thru coworker route, play thru neighbor Naji route AND SAVE BEFORE FINAL MISSION.
It's really annoying because you have to watch two long cut scenes AND do the final mission to lock in each choice at breakfast. One telling her its too bold for her, one telling her it looks great. Weirdly telling her it looks great makes her love the neighbor, telling her its too bold makes her love you.
In case you want details on the routes:
Colonel Route is during mission hidden sex, slow corruption and agreeing to be his sex slave WITH THE BEST FINAL MISSION SCENE OF ANY NETORARE GAME I'VE EVER SEEN. FIVE STARS JUST FOR THIS SCENE.
Coworker Route is during mission hidden sex, sluttification and skimpy outfits, exhibitionism and lots of toy use.
Neighbor Route has no mission hidden sex, lots of at your home hidden sex and is the only ending that includes pregnancy.
To be frank, I find the game repetitive and grindy, the scenes mostly uninspired and unless you're into specific kinks with netorare the NTR is pretty boring. EXCEPT FOR THAT FINAL COLONEL MISSION HO MAN. I go back to that mission and enjoy myself at least once every 2 weeks.
^Final note on that last mission? I don't recommend viewing it in the recollection room. Play the game or get someone's save file that's completed up till right before the final mission. The experience is 10x better if you do it during the mission instead of at the gallery/recollection room.