I Shall Survive Using Potions! Review: She Asked for a Potion-Making Cheat and Got Exactly What She Asked For

Quick Take

• FUNA's potion-based isekai — more action-adjacent than her slime-killing series, with a protagonist whose specific wit is using potion properties to solve problems nobody expected potions to solve
• Kaoru is unusually pragmatic for an isekai protagonist — she plans ahead, anticipates consequences, and uses her one ability with creative lateral thinking
• Ongoing with 7 volumes; clever female-protagonist isekai for readers who enjoy problem-solving over power display

Who Is This Manga For?

• Readers who enjoy female-protagonist isekai with a competent, planning-oriented hero
• Anyone who likes the idea of a single supernatural ability used with maximum creativity
• Fans of FUNA's other work (I've Been Killing Slimes, Didn't I Say to Make My Abilities Average?) who want her in a more action-adjacent setting
• Readers who want ongoing isekai with consistent comedic quality

Content Warnings & Age Rating

Age Rating: T (Teen) Content Warnings: Some action sequences; Kaoru navigates a setting where women have limited formal power, which she addresses through indirect means

The T rating is accurate.

Yu's Rating

Category	Score
Story Depth	★★★☆☆
Art Style	★★★★☆
Character Development	★★★★☆
Accessibility for Non-Japanese Readers	★★★★★
Reread Value	★★★☆☆

Story Overview

Kaoru Nagase died when a god's transport beam accidentally hit her. As compensation for the error, she received a wish. She asked for a container — a small pouch — that could produce any potion she could imagine, in any quantity, with any property she specified.

She reincarnated in a medieval fantasy world as a young woman. The pouch produces potions. Any potion. She has thought about this carefully: potions that heal, that harm, that alter perception, that create light, that produce effects nobody has classified as a potion before because nobody thought to classify them that way.

She sets up as an apothecary. She builds a network of loyal allies. When problems arrive — and in a medieval fantasy world, problems always arrive — she solves them with the lateral application of potion chemistry and considerable advance planning.

Characters

Kaoru Nagase — Her specific quality is the combination of general competence and specific creativity — she doesn't just have one skill, she has spent time thinking about everything that skill could enable. Her relationships with the people she gathers around her are genuinely affectionate rather than transactional.

Her Companions — The young women and various characters who attach themselves to Kaoru form a loyal group that she treats as her household and responsibility. Each has a specific personality and role.

Art Style

Sukima's art is clean and expressive — Kaoru's expressions convey her internal planning process without extensive internal monologue. The potion effects are depicted with appropriate variety given how many different things they do. The medieval setting is detailed enough to feel grounded.

Cultural Context

FUNA's isekai works share a specific concern: female protagonists who navigate settings where formal power structures are disadvantageous to them, using indirect means — craft, commerce, relationships — to achieve goals. Kaoru's potion ability fits this pattern: it is not physical power but creative resourcefulness.

What I Love About It

The sequence where Kaoru faces a political problem that would normally require either military force or aristocratic authority to resolve — and resolves it with a specific potion property combined with advance positioning of allies she's cultivated. The series' most satisfying moments are when her planning reveals how far ahead she was thinking.

What English-Speaking Fans Say

Western readers who enjoy FUNA's other works consistently enjoy I Shall Survive Using Potions for its same-author competent-protagonist energy in a more active setting. Kaoru's planning-ahead approach is noted as more engaging than reactive protagonists — readers appreciate being shown that she anticipated the situation three steps ago.

Memorable Scene ⚠️ Spoiler Warning

The first time Kaoru encounters a problem she had genuinely not anticipated — and her response, rather than panic, is to immediately think about what potions exist or could exist that might address it — demonstrates both her genuine competence and the series' honest treatment of her as someone who can be surprised but not derailed.

Similar Manga

• I've Been Killing Slimes for 300 Years — FUNA's slow-life female protagonist isekai
• Didn't I Say to Make My Abilities Average? — FUNA's ensemble female protagonist isekai
• Ascendance of a Bookworm — Female protagonist using specific knowledge in a medieval world
• The Saint's Magic Power Is Omnipotent — Female protagonist with a specific supernatural skill

Reading Order / Where to Start

Volume 1 — Kaoru's arrival, the pouch's properties, and the establishment of her apothecary.

Official English Translation Status

Seven Seas Entertainment is publishing the English edition, currently at 7 volumes. Ongoing.

Pros & Cons

Pros

• The potion premise is used with genuine creative breadth
• Kaoru's planning approach makes her more interesting than reactive protagonists
• FUNA's characteristic warmth toward her female protagonists is present
• Accessible for readers new to isekai

Cons

• The series is shorter than FUNA's other works — 7 volumes is a limited sample
• The action elements are less developed than dedicated action isekai
• Ongoing with no endpoint yet

Format Comparison

Format	Notes
Individual Volumes	Seven Seas; ongoing
Digital	Available

Where to Buy

Get I Shall Survive Using Potions Vol. 1 on Amazon →

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