Romance - Multiple Couples

2 Couple Mains

• Jin Goo (Seo Dae Young) + Kim Ji Won (Yoon Myung Joo) - Captain's daughter

2 Couple Mains

• Lee Dong Wook (Grim Reaper) + Yoo In Ah (Sunny) - cafe owner

2 Couple Mains

• Kim Min Gue (Cha Sung Hoon) - ML's asst. + Soel In Ah (Jin Young Seo) - FL's BF

2 Couple Mains

• Kim Jung Hyun (Goo Seung Jun) - sly spy + Seo Ji Hye (Seo Dan) - princess complex

2 Couple Mains

• Do Jae Jin (naive student) + Yang Hye Sun (Gumiho)

• Lee Dan (FL's bro) + ML3's sister

• Choi Soo Kyung (FL's BF) + rival classmate

2 Couples Mains

• Park Byung Eun (Ma Sang Goo) - ML's co-worker + Esom (Woo Soo Ji) - FL's friend

2 Couple Mains

• Kim Ju Man + Baek Seol Hui

Mains

• Seong Seon U + Seong Bo Ra (FL's older Sis)

Mains

• Jang Woo Young (Jason) + IU (Kim Pil Sook)

Mains

Mai + Porsche

Mains

ML3 & ML's Dr. friend

• Laundry Mat girl & soccer ball cleaner/motorcycle guy

• Princess + Military commander

• FL's husband + weapons maker's daughter

• Han Ki Joon (drummer) + Bul Ja (illegal alien)

• Yoo Han Chul (cancer band member) + Mina (artist, $ searcher)

• Park Sang Deuk  (heartbroken drunk) + Yoon Mi Young (Sang Deuk's ex)

• Han in Ki (ex-guitarist)+ Kim Soon Boon (social butterfly)

• ML's ghost worker & FL's BF

• Bai Yu Ze + Ding Ming

• FL's BF & FL's brother

• Gay Brother + actor
• Sister-in-Law + evil cousin
• Sister-in-law + Husband's Asst.

• 2 Teachers (FL2 + PE teacher)

• *Roy & Rosa
• FL's sister & guitar singing boyfriend

• FL's BF + ex middle school classmate
• ML's sister + ML's teammate

• FL's brother & BFF

• FL's ex-boyfriend & his ex-wife

• Wa Hi Joon (Ji So Joon) - artist + Jung Eugene (Song Hae Rin) 

• Kang Gi Doong (Park Hoon) - Marketing + Park Gyu Young (Oh Ji Yul) - ditzy rich girl

• Jo Han Chul (Bong Ji Hong) + Kim Sun Young (Seo Young Ah) - ex married couple

• Kim Tae Woo (CEO) + Kim Yoo Mi (Director) - unofficial couple I loved together

Ahn Bo Hyun (Nam Eun Gi) - Judo & Kim Bo Ra (Cindy / Kim Hyo Jin)

• Yoo Dong Hun + Web Manager

• Yang Cheol (ML's secretary) + Bong Se Ra

• FL's sister & teacher @ FL's school

• Yoon Chan Yeong + Lee Bo Na

Mains

• Kang Woo + Tae Yi Ryung

2 Couple Mains

• FL's sister1 w/ FL's CEO ***they get a spin -off drama***

• FL's sister 2 w/ polyamorous guy

• FL's ex w/ FL's co-worker

2 Couple Mains

• EMS Resonder + Reporter
  
  -ML's Mom & Dad
  -FL's Mom & Dad
  -FL's Bro + ML's co-worker

2 Couple Mains

• Yoo Chang Soo + Lee Ji I

2 Couple Mains

• Do won Jun + Sin Na Eun

2 Couple Mains

• Seo Dan Ah + Lee Young Hwa

2 Couple Mains

• Cha Ju Ik + Na Ji Na

2 Couple Mains

• Veronica Park + Ki Dae Joo

2 Main Couples

• Ryu Eun Ho + Kang Sa Ra

• Kwon Eun Taek + Jang Bo Ra

Mains

• Bi Ryum + Mu Ra

• * FL's friend & heart condition classmate

• FL's friend & tough guy

• * Matsuda Shota (Sera Ojiro)- photographer + 

• FL's roomate & guy student w/cat

• 2 females couple
• Friends w/ benefits couple

• 2 females couple
• 2 students - sculptor & girl who has no strings attached relationship

• Flight stewards

• Pregnancy difficulties couple
• Fighting marriage issues couple
• FL's brother & ML's sister

Jung In Kyu (Easygoing ML2) + Kwan Min Ju (Quiet FL2)

2 MLs & 2 FLs

• Time traveler + Cellist

• * Band Leader + Def girl

• Princess who is n/chosen by ML & ML's Assistant

• Grandma & new boyfriend

• FL's crush + FL's BF
• Ex warrior w/ limp + captive w/infant
• FL's servant + ML's asst

• Maeng Ha Na (eldest daughter) + Crown Prince Lee Jae
• Maeng Du Ri  (aggressive daughter) + Lee Shi Yeo (hot mamma's boy bachelor)
• * Maeng Sam Soon (writer daughter) + Jung Soon Goo (FL's Bro)
• Jo Ye Jin  (FL's sis-in-law) + Yoon Boo Gyeom (noble farmer)
• Yeo Joo Daek (saved at river) + ex-prison guard 

• Sa Wol (FL's servant) & Hong Sung Pyo (ML's asst)

• 2 main lead couples
• FL's adoptive parents
• Villain + ex crown princess

• FL's sister + the watchman
• 3rd couple

• Cook + Lady in waiting

• King + Queen
• Queen Dowager + FL's dad

• FL's brother (webtoon artist) + ML's bodyguard
• FL's boss (fashion Designer) + ML's dad (troublesome)
• FL's dad (village leader) + prison boy's mom

• Park Bok-Kyo (ML's Asst) & Shin Da Jeong (FL's Asst)

• FL's 2 older bosses
• ML's parents

• Jo Eun Sub & Goo Seo Ryung

• (FL's sister) + (Sister's friend)
• (ML2, Mtn God) + (Girl who prays to him)

• Chef & ML's sister
• ML's asst & newly promoted manager
• FL's ex & FL's BF

• ML's Asst & FL's coffee cafe owner friend

• FL's oldest Bro & FL's BF
• FL's Mgr & Co. President

• FL's BF(choclatier) & ML's college Sr. (corky researcher)

• Kwan Min Woo + Choi Soo Yeon = enemies to lovers between lead's co workers

• ML's & FL's classmates (become actors)

• Yeo Jun Hui + Han Hui Ju

• * Park Su Gyeong (drunk roommate) & Lee Jin Sang (playboy)

• ML's younger 1/2 bro + convenience store employee girl
• ML's sister + ML's BF

• ML's brother + live in girlfriend
• ML's BF (dog role play) + popular girl
• ML's lesbian BF + muscular girlfriend
• Popular classmate + his transgender girlfriend
• @ gay athlete classmates

Story 2:  

• FL & 18 year friend/neighbor

• FL's BF & her ex-boyfriend

• ML's brother (gym owner) & FL's boss (single mom)

2 main couples - 2 escort boys & 2 college girls (1 cool & 1 dorky)

• Married couple (lead's BFs)
• Hotel owner & ML's funny stalker

• FL's BF & ML's right hand man

• FL's BF (actress) & ML's Assist

• ML's brother & female who is heads the family business.

• Taiwanese girl + music loving guy
• Older geeky tutor girl + bad boy 

• ML's older brother & his arranged marriage wife

• FL's guy BF & ML's assistant 1
• FL's girl BF & ML's assistant 2

• ML's Co-worker (urologist) + Firefighter/boxer
• Pastor + FL's roommate
• ML2  (Firefighter) + FL2 (Relationship columnist)