Sakai Izumi (坂井 泉水; Hō-ló: Pán-chéng Choân-súi), pún-miâ Kamachi Sachiko (蒲池 幸子; Pô͘-tî Hēng-chú 1967 nî 2 goe̍h 6 ji̍t – 2007 nî 5 goe̍h 27 ji̍t), sī Ji̍t-pún ê cha-bó͘ liû-hêng koa-chhiú, chok-khek-ka, kap ga̍k-thoân Zard ê sêng-oân. In-ūi tī Zard ê sêng-oân cho͘-sêng tiong, kan-nā Sakai sī kò͘-tēng ê chi̍t ūi, só͘-í Zard kap Sakai chi-kan kî-si̍t ē-ēng pī ōe siōng téng-hō. I sī 1990 nî-tāi chok-phín siau-lō͘ siāng-kài hó ê cha-bó͘ koa-chhiú, seng-gâi lâu-lo̍h bē-chhut chhiau-kòe 3700-bān tiuⁿ im-ga̍k chhiùⁿ-pôaⁿ ê hui-hông kì-lo̍k.

Sakai Izumi
Pán-chéng Choân-súi
Cha-bó͘ koa-chhiú
Pún-miâ Kamachi Sachiko
Goân-bûn miâ 坂井 泉水
さかい いずみ
Kok-che̍k  Ji̍t-pún
Chhut-sì 1967 nî 2 goe̍h 6 ji̍t(1967-02-06)
Ji̍t-pún Hukuoka Kurume
Kòe-sin 2007 nî 5 goe̍h 27 ji̍t (40 hòe)
Ji̍t-pún Tang-kiaⁿ Sinzyuku
Chit-gia̍p Koa-chhiú, chok-sû-ka
Im-ga̍k lūi-hêng J-pop
Oa̍h-hiáⁿ sî-tāi 1991 chì 2007
Bāng-chām wezard.net
Siong-koan Zard