キャスト — the voices

Who these people are, how they talk, and what to listen for when casting them. Written for auditioning voices: "a Japanese male voice" is useless direction — "calm, unflappable, the person you'd want to call when you're running late" is something you can actually judge a sample against.

The host — English only · he frames the skit

Ben Narrator — sets up the skit, doesn't teach it English only

sounds likeWelcome to Episode 1. I'm Ben.

Role: Bookends the skit. He opens by saying who's in it and what to listen for, steps back entirely for the Japanese, then closes with a one-line recap.
Drives by: Giving the listener something to listen for — not a personal story, a listening prompt: who's talking, what's going on, what to pay attention to.
Personality: Plain, clear, welcoming. No verbal tics or asides — the point is to get out of the way before the skit starts.
Speech: Short, direct sentences. States the situation, then hands off: "Alright, let's listen."
Never: Speaks Japanese. Announces a grammar point or vocabulary word. Explains what a line meant.

Casting Male, warm but mature — measured, pleasant to listen to for the whole episode, a little gravel in it. English only, so the delivery carries the whole episode's personality on its own instead of splitting it across two hosts.

The skit — Japanese · they perform

はる Haru — things happen to her Japanese only

sounds likeすみません、電車の事故があったので、少し遅れます。

Age: Twenties. Working and studying — the situations the listener is actually in.
Role: The one with the problem. She's late, she's unwell, she needs to ask for something. Every episode's grammar arrives through her needing it.
Personality: Lively, polite, a little flustered but entirely competent. Apologises properly and moves on.
Speech: Natural polite Japanese with the hesitations real speech has — あの… · 実は… · はい……
Never: Speaks English. Narrates. Explains grammar. Reads romaji.

Casting ja-JP female, twenties. Natural and lively. Must survive sounding slightly stressed without turning shrill. Reject anything that reads like a station announcement — the test line is a phone call, not a broadcast.

ゆき Yuki — the steady one Japanese only

sounds likeわかりました。無理しないでくださいね。

Age: Thirties. A few years ahead of Haru, wherever they happen to be.
Role: Receives. Reassures. Occasionally advises. He's the person you'd want to be calling when you're running late.
Personality: Calm, kind, unflappable. Takes problems as information rather than drama.
Speech: Measured polite Japanese, unhurried. そうですか。大丈夫ですか。 · もちろんです。
Never: Speaks English. Panics. Lectures Haru. Sounds like a narrator.

Casting ja-JP male, thirties. Standard Tokyo accent, clear articulation, steady pacing. The trap here is narrator voices — they're abundant and they sound wrong the moment he's meant to be a colleague picking up the phone.

いさみ Isami — the gap only Haru sees Japanese only · debuts Ep.3

sounds likeさあ。興味ないので。

Age: Late twenties to thirties. Takes over Yuki's desk, not Yuki's personality.
Role: Surface: cool, blunt, a little intimidating — the office's obvious draw, popular without performing charm for anyone. The actual character is the gap: around Haru, and only Haru, that drops — gentle, attentive, a little unsure of himself.
Personality: Reads people easily, except himself. Shows care through noticing small practical things (she skipped lunch, she's off before she's said a word), never through gestures or declarations.
Speech: Short, flat, almost dismissive with most people — 別に。 · さあ。 — but unhurried and plain, almost careful, with Haru specifically.
Never: Speaks English. Performs warmth for the room. Pushes or pursues — the gap is noticed, not announced.

Casting ja-JP male, young. A neutral, natural-sounding conversational voice, not an inherently "deep" or "gravelly" one — a more exaggerated voice was tried first and read as a performance rather than a person. Cool/blunt comes from the writing (short, flat lines) and direction, not the voice's own default timbre; that's what leaves room for the Haru-only lines to land as genuinely gentle instead of fighting the baseline.

どうしが — how they work together

Ben frames, the skit shows. He opens by naming who's talking and what to listen for, steps back entirely for the skit, then closes with a one-line recap of what happened. He never explains a grammar point or names a pattern — nothing is taught directly, the skit teaches itself.

Haru needs something, Yuki responds. Every skit is a small transaction — an apology, a request, a piece of bad news. The grammar of the week is whatever that transaction requires.

The layers never mix. Ben and the skit characters exist in different layers: he talks about the skit, never to it, and he's English-only where they're Japanese-only. The casting is fixed for the series — Haru is always the female Japanese voice, every male skit character (Yuki, now Isami) is male — but what they are to each other changes per episode: colleagues here, classmates or friends later, or — from Episode 3 — something Haru isn't expecting. Write the relationship into the skit, never into the voice.