It is AliceLuvsMirai's re-imagining of the Light Mobius arcs of Sonic Universe. 15 years later in AliceAcorn6003's universe, Sonic and Amy are now married and protectors of Tokyo, Japan (of the Sonic X world), and Tails and Cream, also married, also lives by them. Shadow rules as king of the kingdom of Mobius (of the Archie world) and protects it along with his wife and queen Sally Acorn. Over at Mystic Ruins, the Echidna Guardians, led by Knuckles and Princess Rouge, live their days guarding the Master Emerald. And they all now have children.
One day, after 5 years of bliss, Doctor Eggman suddenly shows up, after being presumed dead for a long while, and strikes his Evil Plan of taking over Mobius with Scourge and Lien-Da and eventually wiping off Sonic from existence with another Genesis Wave. The seemingly-retired heroes are now shocked by this new persuasion to rise up and defeat Eggman. While everyone else fears for the safety of their children, Amy and Sally worry about how their husbands will prevail.
Read the comic here.
A day before the webcomic's end, AliceAcorn6003, announced Kazoku Forever After, a Prequel Script Fic to the comic, taking place 5 years earlier and exploring the villains' previous plots. It began on August 21, 2018 and it still continuing.
Sonic and Amy, back then dating, are looking forward to moving to and living their peaceful lives in Tokyo, revealed to have been their birthplace. Eggman sees this as a threat to his plan of building his empire in Japan, and begins to stalk them. Meanwhile, Mobius has been attacked by the evil forces of Scourge and Rosy, abducting and imprisoning the Princess Sally Acorn. Shadow, then agent of Tokyo, frees her, and they together embark on the quest to save the kingdom.
The cover can be accessed here to start the fanfic.
This comic/fanfic provides examples of:
- Adaptation Relationship Overhaul: Maria, who was Shadow's best friend in the canon, is now Shadow's adoptive mother.
- Adult Fear: All over the place. Every former Freedom Fighter is now fearing for their children's lives, not wanting them to be endangered by their old enemies.
- Bare Your Midriff: Rouge's casual grown-up outfit consists of a high-cut top and skirt.
- Fictional Country: According to this comment, Mobius and Mystic Ruins are whole cloth-fictional countries in East Asia co-existing with China and North/South Korea, while Babylon co-exists among Southeast Asia.
- Hospital Hottie: Cream, who wears a cute nurse outfit when on a mission.
- The Medic: Cream, a Hospital Hottie who heals others on the mission.
- Modern Stasis: According to this art, the planet in a million years in The Future, where Silver and Blaze come from, is pretty much similar to the present, except Japan, Mobius, and Mystic Ruins have joined into Solaris, and Flying Cars and time mirrors exist.
- Official Couple: Sonic/Amy, Tails/Cream, Shadow/Sally, Mina/Manic, Knuckles/Rouge, Tikal/Remington, Julie-Su/Ralph, Silver/Blaze, Scourge/Rosy, Lien-Da/Finitevus, Nicole/Rotor, Tangle/Scar, Big/Shade, Fiona/Miles, Sticks/Charmy, Antoine/Bunnie
- Patchwork Fic: This comic is definitely based off both the games and Archie continuities, but also includes characters from the Underground, IDW, and Boom continuities.
- Sore Loser: After losing to Sonic and friends and being imprisoned in the Arctic tundra, Rosy just bawls about how she failed and now that her powers are frozen and her daughter cannot be the princess.
- Ugly Guy, Hot Wife: Yes it's real, Big the Cat finally managed to snag Shade the Echidna's heart and have a child with her.
- Unholy Matrimony: Scourge and Rosy are two villains in love, so are Lien-Da and Finitevus, and Fiona and Miles Prower.
- Unto Us a Son and Daughter Are Born: Cream finally gives birth to a pair of twins: A male fox and a female rabbit.
- Your Size May Vary: In this page, Sonic and Amy's young children are the size of teenagers, compared to their grandmother Bernadette, then in the next shot, they are realistically sized.
- Culture Police: Manic and Mina get arrested by King Scourge's police for publishing "anti-government" lyrics, which were to "Brave" by Sara Bareilles.
- Fantastic Racism: In Chapter 13, Bernadette tells how back in her times, the government of Japan and their citizens treated Mobians poorly. When shopping at a baby boutique, Bernadette was stalked by a woman because she assumed she had no money because she was a hedgehog.
- Gratuitous Japanese: "Kazoku" means "family" in Japanese, so the title is literally "Family Forever After".
- Official Couple: Chris/Helen, Shard/Whisper, Gold/Spark
- Robotic Spouse: Whisper the Wolf's husband is a robot hedgehog named Shard.
- Something Else Also Rises: Amy sweats heavily when she sees a dressed-up Sonic, joking about how the AC is broken.