Shizuku (雫, Shizuku^?, lit. "Drip") is an eroge visual novel by Leaf originally released for DOS on January 26, 1996. It has since received releases for Windows. The sequel is ToHeart, because in To Heart ~remember my memories~, Yuusuke and a deceased Mizuho appears.

Miwako Okuda (奥田 美和子, Okuda Miwako^?, born February 13, 1982 in Yonago City, Tottori) is a Japanese solo ballad, pop, and rock singer signed to BMG JAPAN INC.

Miwako started singing when she was a child and has always expressed a passion to become a singer. After graduating from junior high, Miwako was discovered at a live performance with her friend's band and traveled to Tokyo to begin her music career. One of her songs 'Born' is played as an opening theme in the anime Le Chevalier D'Eon, other—'Shizuku'—is played as an ending theme in the anime Great Teacher Onizuka.

Chitose Hajime (元ちとせ, Hajime Chitose^?, born January 5, 1979) is a singer from Japan. She is from Amami Ōshima and sings in a style particular to that region, with distinctive falsetto effects.

Chitose Hajime began learning shamisen under her mother's encouragement from a young age. At age 10 she began to pick up "Shima-Uta" [island songs], a style of singing passed down through generations and part of the Ryukyuan music tradition.

She won many folk song competitions during her teens, traveling to events across Japan. She released two traditional folk albums on cassette on an indie label, the first at age 15, and at age 18 was approached by numerous record labels following a grand prize win at a local folk song contest. Stating in a later interview that she was "suspicious of them," she decided not to join the labels or pursue music and instead chose to study to become a beautician following in the footsteps of her older sister. She moved to Osaka in 1998. However, Hajime suffered from asthma and had severe allergic reactions to many of the chemicals used by beauticians. She withdrew from school, but before returning home to Amami Ōshima, contacted artist management company Office Augusta, the only company who had gone all the way to visit her on her home island during the flurry to sign Hajime at age 18.

Terius Youngdell Nash (Born September 20, 1977), better known by his stage name The-Dream, is an American singer-songwriter and record producer. He is known for co-writing chart topping hits such as "Baby" for Justin Bieber, "Umbrella" for Rihanna and "Single Ladies (Put a Ring on It)" for Beyoncé, as well as for his three solo albums, Love Hate, Love vs. Money, and Love King.

Terius Nash was born in Rockingham, North Carolina and moved with his mother, Reva Nash, to Atlanta at the age of 3. He played trumpet, drums, and guitar as a child. His mother died in 1992 when Nash was fifteen years old, an event which would inspire him to write songs. He states that the death of his mother gave him a "soft spot" for women, which he credits to his desire to write songs about female empowerment such as Rihanna's "Umbrella". He moved in with his grandfather, a concrete mason who instilled a strong work ethic in young Nash. Of his grandfather, Nash recalls "He came out of a bad time for blacks in the South, but even though we lived in the hood, we had a boat, some cars and a house that was paid for. So I’ve always had a different outlook on life. There’s nothing I can’t do."