Funbag Fantasy: Sideboob Story (Kyonyuu Fantasy Gaiden in Japan) is an H-Game and the first sequel to the original game in the Funbag Fantasy series, releasing in 2011 and receiving an English localization in 2018.
Two years after Lute Hende graduated in last place from the Royal Knight Academy, he has become king of Edelland and enjoys a cozy life with his three official & three unofficial wives. Their efforts have granted Edelland an age of stability, cementing Lute's support among his people even with his vulgarity becoming further entrenched in his reputation. Unfortunately, Edelland's success has kindled envy in other nations, especially its neighbor Lingobard.
Following the execution of Prince Bobon at the conclusion of the previous game, Lingobard's King Bazalt I invaded Edelland to claim ownership of the throne. But his forces were routed within days, and he was forced to cede part of his kingdom to Edelland. Hungry for revenge, Bazalt sends his nephew Argent into Edelland to kill Lute with the aid of magical artifacts from Marquis Cuvier, the grand chamberlain of Lingobard's other neighbor Fronce.
Meanwhile, a rift has developed within the Church of the Holy Rood over whether to recognize Lute's demon wife Shamsiel as a legitimate queen of Edelland. On the covert suggestion of Marquis Cuvier, the anti-Shamsiel faction proposes the church send an investigation team to assess her worth. They neglect to mention the additional magic items Cuvier provided to tilt the verdict in their favor.
Funbag Fantasy: Sideboob Story contains examples of:
- Actually Pretty Funny: In the True Harem route, after Cuvier's failed Trojan Horse plan winds up causing all the soldiers he's hidden in wine barrels to conveniently materialize in the locked dungeon cells the barrels were placed in. They were all jam-packed in the cells like sardines, demanding to be let out. Shamsiel, Gladys, Emerelia, and Felzen were laughing their heads off at the sight while Cuvier could only look on in dumbstruck horror.
- Blonde, Brunette, Redhead: Lute's official wives at the start: Luceria, Roxanne, and Shamsiel.
- Clear My Name: One of the main plots is that Shamsiel is being framed by a doppleganger of herself created by some corrupt cardinals in order to ruin her reputation and discredit her position as a legitimate queen.
- Cool and Unusual Punishment: After the succubus doppleganger incident was resolved which revealed that Cardinal Canossa was behind it in order to frame Shamsiel, Shamsiel forces the corrupt cardinal to humiliate himself by making him act like a dog in front of witnesses.
- Cutting Off the Branches: The only events from the previous game which are treated as canon are the ones leading to the ending with all six women. Everything else, including the entire trip through the Giropon Woods, never happened.
- Fanservice Pack: All six returning women have received new everyday outfits. Overall they're similar to the original ones, but are more detailed and show just a bit more skin. Shamsiel, on top of retaining the inexplicably enlarged breasts she picked up midway through the first game, now sometimes dons an elegant white dress which emphasizes her bust even more.
- Fantastic Racism: Not everyone in Edelland is happy about their king doing away with the demon extermination laws and marrying a succubus. Outside the borders, leaders in both Lingobard and Fronce find it objectionable as well, and the Church of the Holy Rood is in conflict with itself over whether Shamsiel can be queen.
- Gaiden Game: Averted, despite the Japanese title calling it one and the English title keeping the implication. It's a direct sequel to the original game.
- Hypocritical Humor: Roxanne and Luceria tell Gladys that her usual outfit is inappropriate to wear when welcoming Queen Aphrodia to Edelland because it is too skimpy. Gladys calls the both of them out, saying their normal outfits are just as skimpy as hers (even calling Roxanne "boobs on legs" due to her dress having a huge Cleavage Window and exposing much of her naked legs).
- Paper-Thin Disguise: The fake Shamsiel manages to fool everyone (except the Vunderbalt Knights) into thinking she's the real Shamsiel when committing crimes to ruin her reputation. This is despite the fact the fake is not only differently colored, she's also as flat as a washboard.
- Royal Harem: Lute, as king, has Shamsiel, Roxanne, Luceria, Gladys, Isis, and Emeralia from his previous adventures. This time around, Nellis joins the group, for a total of seven women. Queen Aphrodia also begins a romantic relationship with Lute, but does not live with him past her week of "reparations".
- Shut Up, Scary Thing: The fake succubus created to frame Shamsiel tries to attack the men at Vunderbalt, but unlike everyone else she's attacked before, the Vunderbalt knights immediately knew she's a fake (they've worked with Shamsiel before and could never forget about the sexy busty succubus if they wanted to). First off, the imposter had the wrong coloring. Second, and most importantly, this one was completely flat-chested. They start attacking her (verbally AND with weapons) until she flees. Comically, something akin to RPG battle victory music played afterwards.
- Sitcom Arch-Nemesis: Shamsiel and Gladys can bicker over anything.
- Trojan Horse: Just prior to the true ending, Cuvier shrinks a bunch of his soldiers, hides them in wine barrels, and offers the barrels as a gift while visiting Edelland to sign a pact. When negotiations stall, Cuvier brings the soldiers back to full size, brags that he's taken over the castle, and demands Lute sign the pact. It might have worked, if Argent hadn't told the guards to put all the wine barrels in the dungeon resulting in the soldiers being trapped.
- World of Buxom: Once again, none of the ladies are below an H-cup.