Final Fantasy: Unlimited

Wonderland: Journey into the Darkness

A giant dark pillar appears in the ocean off of Tokyo. Two huge beasts appear out of it, a red one with the head of a gun, and a white one with the head of a sword. They attack each other and both are destroyed. Joe and Marie Hayakawa, a geologist couple, are swallowed into the pillar and end up in a crazy place called the Inner World. They return safely after many adventures. Twelve years later, the pillar is a tourist attraction. Joe and Marie have gone into the Inner World again to explore (after writing a bestselling book on the flora and fauna of the place), and are never seen again. Their twin children, Yu and Ai, enter an abandoned subway station to ride the Inner World subway to look for their parents. However, the train has another occupant - a woman named Lisa Pacifist, also traveling to the Inner World for reasons she refuses to divulge. Arriving in the Inner World, they encounter a strange land that looks like Tokyo, but is inhabited by insects and built out of plants! Yu encounters a chocobo, who pulls Ai's pigtails and runs off. He then trips over someone's leg. The leg belongs to a man called Kaze, who has been put to sleep and trapped in a plant cage. He awakens at Yu's touch. Suddenly, what looks like a flying saucer drops a crystal that turns into a mushroom monster! Lisa staves it off with a power called kigenjutsu, but it just gets angrier and bigger. Lisa and the kids end up hanging off the edge of a cliff with the monster before them. However, Kaze is nearby and uses his Demon Gun to summon Phoenix and destroy the monster from inside. However, he has an unnoticed observer by the name of Oscar... (Source: FinalFantasyCompendium)

Magun: Man of the Black Wind

Fruit: The Town of Sweet Scent

Makenshi: The White Etude

Cid: The Adventure of the Underground Waterway

Kigen Arts: The Saviour of Souls

Subway: Enemy of the Dimensional Tunnel

Soil: The Heart of the Magun

Oscha: The Endless Project

Mansion: The Memory of Sagiso

Ciel: The Departure of Chocobo

Fungus: Eternal Life

Meteor: Abominable Memory

Omega: Reunion and Departure

Jane: The Moving Ocean Puzzle

Kigen Dragon: Behind the Smile

Frog: The Smallest Great Adventure

Madoushi: The Battle of Kiri and Kumo

Ai: Meeting with Clear

Yu: The Secret of Gaudium

Cactus: The Wandering Sea

Moogle: Long Lost Memories

Teros: In Search of Flying Water

Chaos: The Earl Unveiled