21: Two One

21: Two One is a romance and murder mystery visual novel where the player assumes the role of Takuya Kirishima, the main protagonist of the game. Much of its gameplay is spent reading the game's narrative and dialogue. Text is accompanied by character sprites, whom of which Takuya can converse with, over background art. Throughout the game, the player will encounter CG artwork, which replaces the background art and character sprites.

The game follows standard visual novel gameplay, which means the player can attain various different endings, and depending on the decisions that the player makes during the game, the plot will progress in a specific direction. A. Noire). This navigation will effect the ending the player receives.

Takuya Kirishima (霧島 拓哉) is a talented surgeon who works in a hospital, he does this in order to help those in need. He decided to become a doctor after losing his mother. Takuya works alongside his childhood friend Seri Sakaki (榊 芹, voiced by: Ayako Kawasumi), who works as a nurse in the same hospital. She is the one person who understands Takuya's pain the most, and became a nurse to assist him.

Seri is generally a high spirited, cheerful girl, but occasionally a little violent. Takuya also works alongside Momiji Kikyou (汽京 紅葉, voiced by: Kotono Mitsuishi), a medical doctor. She is a well mannered, positive thinker, and follows her mother's example, who was a talented doctor.

21: Two One is BasiL's second project, after their first visual novel Bless: Close Your Eyes, Open Your Mind. Aoi Nishimata, Koma Toeji, and Satomi Hinako provided the character designs. Koma Toeja designed the two characters Konoha Ichinose, and Momiji Kikyou, Satomi Hinako designed Mihara Kasumi, a supporting character in the game, and Aoi Nishimata designed the rest of the characters. Ago Baria and Ou Jackson were the scenario writers for the game.

Ago Baria worked on the main scenario, whilst Ou Jackson worked on the bonus scenario. Lastly, music was handled by Coldhand, KING, Yūji Naitō, and Atchorike. After 21: Two One, BasiL went on to create their final project Cherry Petals Fall Like Teardrops, before forming a new company called Navel, which would go on to creating successful visual novels like Shuffle! and Oretachi ni Tsubasa wa Nai.

According to a sales ranking of bishōjo games conducted by PCNews, 21: Two One premiered at No. 2 in the rankings, which took place in the second half of May 2001. The game charted again and ranked at No. 2 during the first half of June 2001.

Then, during the second half of June 2001, 21: Two One made one last charting appearance at No. 50.