Welcome to Waikiki

Ji-soo's mother

(ep. 6)

Lee Min-ah (ep. 3)

Kang Seo-jin

(ep. 4)

Dong-gu's university club senior (ep. 12)

Kim Jae-woo (eps. 11–12)

Min Soo-ah

Tae Hyun (eps. 2–3)

Song Hyun-joon (eps. 9–16)

Jang-yul

Kwon Hye-jin (ep. 5)

MC Dacopy (ep. 19)

(ep. 1)

Park Chang-ho (ep. 12)

Ah-young

The owner of Waikiki Guesthouse (ep. 6)

Lee Yoon-suk (eps. 1–2, 10–11)

A department store person

Min Soo-bong (ep. 11)

Kim Hee-Ja (ep. 4)

Philip (ep. 16)

Han Yoon-ah

Kim Woo-sung

Radio DJ (ep. 13)

Sun-woo (ep. 5)

Hong-suk (ep. 13)

Min Ki-young (ep. 13)

Yoon Mal-geum / Cherry

Lee Joon-ki

Ji-min (ep. 3)