Lillia and Treize

• Author: Keiichi Sigsawa
• Genres: Light Novel, Phiêu Lưu, Drama
• Status: Completed
• Chapters: 6
• Rating: ★ 4.2 / 5
• Published: 2026-10-05

A Legacy of the Past

This story opens a new chapter 17 years after the events of the prequel. The world has put on a new face now that the rivalry between the United Kingdom of Bezel-Iltoa and the Roxcheanuk Federation has quieted down. Author Keiichi Sigsawa constructs a backdrop of fragile peace, a delicate stage where the children of the new generation take their first steps into the world.

Here's a friendly pro-tip: read the prequel first if you don't want to get overwhelmed by all the lore. While Lillia and Treize works perfectly fine as a standalone, its true depth only shines when contrasted with their parents' hard-won struggles. The ghosts of the past are still lingering, waiting to test the resolve of these young souls.

This passing of the torch doesn't feel forced at all; instead, it delivers a tightly knit connection and a wave of nostalgia. Familiar landmarks reappear with new purposes, mirroring the post-war shifts of the era. Readers can practically feel the pulse of a world trying to heal wounds that haven't quite closed yet.

A Refreshingly Blunt Heroine

Lillia—or by her ridiculously long full name, Lilliane Acacia Corazon Whittington Schultz—is a breath of fresh air in the narrative. At 15 or 16, she is definitely not your typical delicate lady waiting to be rescued. Inheriting her spitfire personality from her mother, Allison, she possesses a spirit that is blunt to the point of being childish.

Her bilingual abilities and piloting skills are fantastic additions for a female lead in this setting. Lillia never backs down from danger, even if her impulsiveness occasionally complicates things more than necessary. Yet, it's that very zeal that jumpstarts their unexpected adventures.

Though she can be stubborn, her sheer sincerity acts as the glue holding the cast together. Her worldview strikes a balance between innocence and the admirable resolve of a young girl coming of age. She represents a generation raised in peacetime, yet lacking none of the grit.

The Multi-Talented Prince

In stark contrast to his loud-mouthed companion, Treize is the textbook definition of the "golden boy." The son of Carr Benedict and Fiona, he carries the royal blood of Ixtova. Going by his full name, Treize Bain, he boasts a resume of skills that would make anyone green with envy.

From cooking and hunting to piloting, nothing seems to trip up this 16-to-17-year-old. However, Treize's kryptonite is his clumsiness in romance, especially when it comes to Lillia. Calm and considerate, he silently watches her back with an almost saintly patience.

His true identity is a closely guarded state secret, thanks to the strict royal sole heir rule. This forces him to live under a fascinating mask of constant restraint and calculation. The contrast between his absolute competence and his sheer awkwardness around his crush makes for some genuinely hilarious moments of light comedy.

Journeys Into the Unknown

The plot doesn't just rest on character chemistry; it expands into intriguing adventures. Each volume of this 6-book Light Novel series throws fresh hurdles at them, deeply tied to the world's geopolitics. Peace isn't free in this universe, and our leads quickly learn the steep price that comes with it.

The pacing remains moderate, letting you absorb every nuance of the worldbuilding. The conflicts here aren't massive shootouts but rather political machinations and lingering historical fallout. The arrival of Treize's twin sister, Merielle, also plays a key role in widening the scope.

Events unfold logically, guiding readers through twist after twist without relying on absurd magic systems or power levels. Power in this world lies in intellect, survival skills, and linguistic understanding across different cultures. The author shines in delivering an emotional and realistic adventure.

The Highlights

• Well-rounded character development, with incredibly natural and endearing chemistry between the leads.
• A detailed and logical setting that beautifully captures the essence of a transitional era.
• Keiichi Sigsawa's writing is fluid and highly visual, particularly during the aviation scenes.
• Deftly explores the underlying tensions of a world that only appears to be at peace.
• A perfect continuation of its predecessor's legacy while maintaining its own distinct identity.

A Few Caveats

• The pacing in the opening chapters of each volume is a bit slow, which might test the patience of action junkies.
• Lillia's excessive lightheartedness can occasionally be frustrating because she is so oblivious when it comes to romance.
• Certain political details require close attention to keep track of the plot twists.

Community Reception

• Novel Updates: 4.1/5.0 (34 ratings, checked on October 5, 2026). Readers highly praise Treize's patient romantic pursuit and the lighthearted yet meaningful adventure style. Many call it a worthy sequel that lives up to the author's reputation.

The Verdict

This 6-volume series is a fantastic pick for anyone looking for a blend of adventure and sweet romance. It doesn't need absurd power scales to keep you hooked, choosing instead to win you over with realism and genuine human values. Even if the female lead's slow-burn romance makes you want to pull your hair out sometimes, their journey of growing up is absolutely worth following.

Bottom line: An excellent sequel where a childhood sweethearts dynamic is set against a deeply developed world and colorful adventures.

Tags: childhood friends to lovers, adventure, sequel