A to F (Didn't Think This Through) | G to L (Gold Digger, Gonky Femme, Humiliation Conga, Kawaiiko) | M to R (Revenge Romance) | S to Y (Shout-Out, The Unfavorite)
Later stories of Manga Soprano have a variant where a female main character has an evil sister or false friend who plots to steal her fiancé, either as revenge for "making her miserable", to prove themselves better than the FMC, or just to make her suffer. However, her plot is rendered moot upon realizing she snatched the wrong man and ends up paying the consequences since the man she snatched turns out to be homeless, a playboy, and/or a gambling addict at best, and a rapist/domestic abuser at worst.
If the female lead already had kids before the antagonist starts plotting, they will see through her facade and trick her into sleeping with the wrong man behind their mother's back in retaliation.
- "A childhood friend called me and told me she is pregnant with your fiancé's child"
: Karin hooks up with Casino to get back at Ram, thinking he was the latter woman's fiancé and gets pregnant as a result. However, her gloating is rendered moot when Ram tells her that her fiancé is actually a fisherman named Kairi. - "I was called that my sister robbed my fiancé, but I was on vacation with my fiancé." [sic]: Sachi flips out at Ram after realizing the latter got married. Later, she snatches the man who walked with Ram and gloats to her on the phone about having stolen her husband. However, Ram tells her that she's with him in a vacation overseas. Turns out Sachi "stole" a playboy who hit on Ram.
- "My sister, who is adored by her parents, looted my boyfriend": Sakura snooped through Haru's SNS history and found someone named "Punio". Since Haru was a fan of Puni (who is an In-Universe fictional character in this story), she thought the alleged "Punio" was her boyfriend. Much to her dismay, Haru revealed the truth to her before the guy had his way with her. To make matters worse, "Punio" was a married man, whose wife sued Sakura for alimony.
- "My sister, who takes all my things, brags that she stole my boyfriend. But she was mistaken.." [sic]: Milano stole Kanade's high-school boyfriend and got away with it. Years later, she attempts to sabotage Kanade's marriage to a CEO and gloat to her about it, only to be told that Kanade is marrying overseas. When Alto tells Milano he's running an inn consulting company, she realizes that the man she "stole" was Takeuchi. To make matters worse for her, he was married.
- "My sister call me wedding now with my fiance → But I'm having a wedding abroad at that time ...! ??" [sic]: Erica sees Kanade hanging out with a man at the street and resolves to steal him. The former calls the latter at the wedding day to gloat about marrying Kanade's fiancé. Much to Erica's dismay, Kanade tells her that she and her fiancé Alto were marrying abroad. The man Erica was going to marry, Mr. Yamamoto, was a womanizer.
- "My sister called me to report that my fiancé engaged to her →But then I was at the wedding..." [sic]: Uta gloats to Kanade about stealing her fiancé, but is proven wrong when the man (Alto) shows up in Kanade's dressing room, holding Onpu. Turns out the man Uta "stole" was actually Onpu's friend's father. However, Uta and the man eventually fall in love and get together because they were both poor.
- "My sister contacted me and reported that she and my fiancée went to the pool together.", Hideko plotted to steal her sister Ram's fiancé in revenge for becoming a pariah because Ram forced her to pay alimony for stealing her first husband. When she called Ram to gloat about her vacation at the pool with Kairi, but the latter woman reveals that Kairi is allergic to chlorine. Turns out Hideko dated a delinquent playboy who hit on Ram, and he took advantage of the call to rob her of her passport and bag before vanishing himself.
- "My sister has reported to me that she has plundered my husband→That man was not my husband." [sic]: Mai steals her sister Ai's fiancé Yuki and becomes pregnant. But when she phones Ai to gloat about it, she replies that Yuki died and she's at his funeral. At first, Mai thought she was bluffing until Ai shows Yuki's casket through videocall. Turns out the "Yuki" she snatched was actually his delinquent twin brother Koki, who robbed her blind afterward.
- "My sister pregnant with my husband's child → "Thank you!" The reason I thanked her..." [sic]: Haru's younger sister Rie showed up pregnant; she stole him from Haru after finding out he worked for a prestigious trading company. Much to Rie's dismay, Haru happily reveals that Ryo became a shut-in after quitting the company, all because he sulked when he said he had a bad day. To make matters worse for them, Rie quit her career hoping Ryo would look after her.
- "My twin sister, whom I had insulated, pretended to be me and did evil things." [sic]: Rui gloats to Ram in the phone about impersonating her and stealing her fiancé. Ram almost believes it for a second until Kairi catching up to her, to which she asks Rui about the man she's with. When Rui mentions "Masato-san", Ram reveals that Masato is actually a stalker who hit on her.
- "My wedding day, I received a phone call from sister saying that she had a child with my fiancé." [sic]: Kanade's younger sister Uta calls her two months after being refused 10 million yen from her. She gloated about expecting the former's fiancé's child and then forced Kanade to choose between paying and getting her fiancé back at the cost of Uta's baby, or refuse and give up her fiancé. However, when she claims having met the man four months ago, Kanade tells her that her fiancé went overseas five months ago. Uta then gives up and reveals it's her ex-boyfriend's child; he left her in debt. Uta asked Kanade for the money because her current boyfriend refused to give it to her. This pisses Kanade off and she cuts ties with Uta and her parents.
- "The day before her wedding, her pregnant sister took her fiancé from her": One day before Ram's wedding with Masashi, her parents and her younger sister Yuri came to visit. Yuri herself announced her intentions to marry Masashi. After so much gloating, Ram takes it well and leaves.
- "My sister plundered my fiancé! Now my arranged marriage partner is also plundered": Nonoka stole her sister Ram's fiancé Ikki-san in one of her attempts to make her suffer. Much to her surprise, Ram thanked her and left her with her new boyfriend. Turns out Ikki-san was actually a misogynistic jerk who hated working women and a serial cheater, thus Nonoka got subjected to Domestic Abuse instead of Ram.
- "My sister called me and said, I'm dating your husband But the person she called was" [sic]: Karin steals Ram's husband Kairi and called her to gloat about it, only to hear her own husband Joe calling her out. On top of that, the man who showed up to date Karin wasn't even Kairi, but Takeuchi, who tried to coerce her into going to his house until Ram and Joe scared him out of it.
- "My sister took my husband away from me when I was pregnant →years later she was punished": Yuri slept with Ram's husband Kairi and not only calls her to gloat about it, but sends her pictures of the affair to rub it in. However, Ram's heartbroken cries stop when her son Kota sees the pictures and points out it's not Kairi, but the con man Yuri talked about moments earlier. This is confirmed when she finds her handbag empty.
- "I got a call from a stingy mom friend in the middle of a wedding": Asako plans to steal Alto from her older sister Kanade to spite her for announcing her marriage to him. However, after getting him drunk, she leaves him for a man named Morita as he seemed richer than Alto. However, it backfires when Morita was actually a cheater and gambling addict.
- "My sister called me to tell me that she had plundered her fiancé": Karin steals her sister Kanade's fiancé Alto and calls her to announce the news. When Kanade seemed to fall into despair, someone rang Kanade's door and it was Alto. Turns out the man Karin snatched was actually a bald Lazy Bum who lived with his parents and wore a pink wig similar to Alto's hair.
- "My sister, who thinks she is the most beautiful person in the world, plundered my fiancé": Natsuko steals her younger sister Haru's husband out of spite for managing to get married earlier than her. When she gloated about it on the phone to Haru, her kids Karin and Casino tell her the man she bedded was actually a homeless man named Shimizu, who played "the rich man" with them. Moreover, the suit he wore while playing was an old one of Narita's; he quit many jobs all the time and failed his marriage five times. After that, Natsuko begged for help but Haru disowned her as a sister and hung up on her, leaving her screaming for help as Shimizu planned his wedding.
- "The sister who took father and house from her son now plunders my fiancé": Sakura gloats at her sister Haru about stealing the latter's fiancé in revenge for Haru dating the senior of the high school soccer team she crushed on. However, Haru told her that she was in the pool with her husband and her son Kairi. Turns out Sakura thought Haru's fiance Narita was named Naruta by word of Kairi; Naruta himself was a gambling addict on top of being a playboy, thus having no money for the way back.
- "My sister called me fat, disrespected me, and stole my fiancé": Utako planned to steal Kanade's boyfriend. Onpu tricked her by giving her the description of Satoshi rather than Alto, her real boyfriend. When Utako called Kanade to announce that she has slept with her boyfriend, Alto shows up at Kanade's residence. Kanade reveals that the man that Utako slept with is Satoshi, who works in a company with poor working conditions. Luckily for Utako, she fell in love with Satoshi and she was able to turn over a new leaf.
- "A twin thought she successfully stole her sister's fiance at the reunion but ended up with": Utako plotted to steal Kanade's fiancé after finding out she was going to marry despite stealing her previous boyfriends. However, Kanade mentioned Yamada to mean Alto, with Onpu warning him about her before heading for the school reunion party. When Utako called Kanade to gloat about having stolen her fiancé "Yamada-kun", Onpu chewed her out until Kanade took the phone to hear her gloating. However, Yamada-kun reveals he wasn't Kanade's fiancé; Kanade herself reveals he was a player who did terrible things to women and it's implied he was about to rape Utako after Kanade hung up on her.
- "Jealous Sister Says She’s In The Hotel with My Fiancé → But When I Tell Her He Is With Me…": Rinka plotted to steal her older sister Karin's fiancé at the hospital in revenge for being constantly compared to her, but the latter's son Shinsuke tricked her that it was the playboy next to Casino. When Rinka called Karin to gloat about it after the man was discharged from the hospital, she reveals her fiancé is still in the hospital and that the man she bedded was so much of a playboy, women came to visit his house everyday.
- "My sister called me during my daughter's school event! Her shocking last hits her": Kayla stole Erica's husband and broke the couple up, only to find that Erica shrugged it off. When she tried to steal her latest fiancé since he was described as a good-looking wealthy teacher, and because she felt Erica got everything easily compared to her. However, Snow White tricked her by giving her the description of Mr. Akira rather than Baccarat, who was Erica's real fiancé. When Kayla called to gloat about stealing her fiancé, Erica tells her the truth. In the end, Mr. Akira dumped Kayla for not being married.
- "My sister, who used to make fun of my small breasts, apparently stole my fiancé": Ran resolved to steal Haru's fiancé after finding out by word of their chatty aunt he was a CEO. However, Haru's daughter Sakura tricks her by giving her the address of a man named Shigeru instead of Narita's. When Ran called Haru to gloat about having stolen her fiancé, Haru reveals the truth and informs her that Shigeru is not only a playboy but a penniless gambling addict. Ran begs Haru for help after finding out, only for the latter to hang up on her. Eventually, Ran broke up with Shigeru, but lost a lot of money because of his gambling addiction and has to work multiple part-time jobs to survive.
- "The day after my fiancée proposed to me, I got a call saying my sister had stolen my fiancée": Anna plotted to steal Karin's fiancé Casino in revenge for being constantly compared to her sister. However, her daughter Mikan deducts this as the case and tricks Anna by giving her the description of a red-haired man. When Anna called Karin on the latter's wedding day to gloat about it, she fell for it until Casino showed up to the wedding. It turns out the man Anna slept with was actually Karin's stalker, who then prepares to rape Anna in the middle of the call. However, Karin and Casino decide to go through the wedding ceremony before rushing to help her. Afterward, they get ahold of Anna's location and call the cops on the bastard.
- "My Sister Robbed My Fiancee! However, the person who looted it was…": Burimi plotted to steal Kanade's fiancé to spite her out of a belief she was prettier than the latter despite evidence to the contrary. When she encounters Kanade and Onpu on their way to a restaurant on a Saturday after Alto canceled at the last minute, she gloats at Kanade about having stolen her fiancé this time. However, when the man arrived, Kanade and Onpu found out it wasn't Alto, but his lazy brother Baccarat, who also canceled last minute. When Alto arrived, Burimi blew up at Baccarat and whined about how it's possible for Kanade to have a good man when she was "prettier than her," but Alto has none of her crap and sends her home crying by saying Kanade is the prettier one.
