5/5
Content -> Club Bifrost has the player take over a monster girl brothel to pay off a series of increasingly expensive debts. An attempt at the somewhat well known "sexy management simulator", the game is quite robust and features a surprising amount of content. This ranges to multiple endings ranging from 4 "main" endings and individual ending sequences when achieving affection thresholds with the brothel employees. It also boasts a New Game+ mode that scales with completed achievements as well as an endless mode for experimentation and theory crafting. Between all this content and the actual ero scenes, this creates a large gallery for completionists to fill and encourages one to replay and perfect their management style. It also features 3 difficulties: Normal, Hard, and Expert.
Gameplay -> This is where the game shines, Bifrost utilizes systems based around generic stat parameters and character traits to appease clients. You can train your employees general stats to make them more appealing, cultivate/trade traits between employees, and upgrade your facilities to really go at the game in a myriad of ways that makes experimentation both fun and rewarding when done correctly. The duration of the game takes place over 35 rounds, composed of a management phase followed by a prostitution phase in which you receive money to feed back into the business.
Art -> Overall quite good, the art itself is not the most impressive in the world, but each race is given multiple training CGs, affection CGs, and prostitution CGs. This amounts to a large catalogue of artwork of varying (yet consistent) quality. Monster girl fans will love the diversity and training their particular favorite mongirl, as well as the varied fetishes covered throughout the game art as well.
Writing -> Perhaps the weakest segment here, though largely forgivable. The entire plot occurs within a month, which leads to a somewhat predictable storyline that is still serviceable. Small epilogues at the end of the game are quite short and only present a glance into what may have transpired. The biggest strength here is how this dialogue shifts as the characters are trained, as it changes to appropriately conform. For example, a newly bought mongirl would be less than thrilled at her occupation which is reflected in her dialogue, however, one with 9/9 in her lewdness stat reacts differently in all scenarios.
Post-Script: Perhaps the best sexual management game I've played when accounting for gameplay, features, and polish.