This game is technically not available in the west due to needing connection to Japanese server. Wouldn't recommend this if you don't use VPN. vv Review here vv

This is basically Koikatsu but redefine and better graphics. The story is basically theres a hotel for 18+ action with your custom waifu. If you want something like Koikatsu Studio you need to pay extra for expansion called HoneyCome Dolce (which also requires Japanese server). Theres limited options for character creation unlike Koikatsu Party where theres tons of options with modding support

I wouldn't waste money on this until Illgames (successor from Illusion) can fix this server problem or better yet; removed from Steam

CAMPAIGN
Campaign is very disappointing with rushed development using assets from WarZone 2.0 and Co-Op missions from MWII('22). No character development and ending that led to nowhere

MAIN MENU
It's literally MWII('22). If you want to play MW2('22) you would have to boot up MWIII application and click another application of MWII('22) inside MWIII application.

MODERN WARFARE ZOMBIES (MWZ)
Modern Warfare Zombies is simply DMZ from MWII('22) but done right. adding story content along if you do certain challenges to progress the story. Zombies get difficult the longer you stay and the further you go deeper the harder its gets with three Zones, making teamwork essential!

MULTIPLAYER
It's more faster. Cancel Reload and Cancel Slide is back. The maps are simply from Modern Warfare 2 2009 which is a selling point for nostalgia sake. All things purchases from MWII('22) is carried over including Operators, guns, callingcards, emblems and so on. War Tracks is the only thing doesn't carried over.
As of this moment: The Battle Pass progression from MWII('22) is on MWIII as well.