"Love Princess†Unmatched: Throb Romance of Three Kingdoms Filled with Girls") is a series of Japanese adult visual novels and strategy video games primarily developed and published by BaseSon for the Windows and is based on the classic 14th century Chinese novel Romance of the Three Kingdoms by Luo Guanzhong.

As the empire finally collapse and warlords wage war with each other, amidst the turmoil several major factions are formed, ready to rule and unite the fractured nation.

The gameplay in Koihime Musō follows a linear plot line, which offers pre-determined scenarios and courses of interaction, and focuses on the appeal of the female main characters.

Koihime Musō is the fifth game developed by BaseSon, known for creating their first title, One2: Eien no Yakusoku, sequel to Tactics' One: Kagayaku Kisetsu e. Direction and planning for Kohime Musō was done by K. Baggio,[3] who has also provided scenario used in the game, along with fellow writers Izumi Kumashiro, Takuya Aoyama, Assault, and Shiina Arai.

[4] Art direction and character designs were split between five people, Kanan Yatsuha, Kantaka, Hinata Katagiri, Eiji Hikage, and Hokuto Saeki.

While the gameplay and scenario in the game is essentially the same, an extra fandisc not available in the original version titled Sheishei Musō (謝謝†無双) was included with the re-release as a CD-ROM.

[5] An all-ages consumer port for the PlayStation 2, retitled as Koihime Musō (恋姫†夢想), developed by Yeti and published by Regista was released on October 30, 2008.

[7] Additionally, Gamania formally launched a web-browser based MMO strategy game titled Web Koihime Musō (Web恋姫†夢想) on December 7, 2010,[8] which has since been running on eight different servers.

Like most other browser based MMOs, this game is free to play with a Gamania account, however paying users gain access to enhancements otherwise unavailable or very difficult to obtain.

[9] June 2012 the website Jlist.com began selling copies of Koihime Musō as a DX version with restored voices; in a partnership with MangaGamer.

[13] The anime television series, with its title shortened to simply Koihime Musō, featured a story very different from that found in the original visual novel.

The ending song is a Piano Arranged version of "Shizai Senri: Koihime Yobite Hyakka no Ō to Nasu" (志在千里 〜恋姫喚作百花王〜, Aiming Far: The Princesses in Love Summon the Ruler of Flowers) by Chata.

The opening theme, titled "Flower of Bravery", was performed by fripSide, and was composed and written by Chiyomaru Shikura, and arranged by Satoshi Yaginuma.