Why one listener is not the whole audience
Register in Japanese is chosen for the listener, and learners internalise that as choosing for the person they are addressing. In a group that is not sufficient, because everyone present hears what you say, and the register is read as a statement about the situation rather than about one relationship.
So a casual sentence addressed to a friend, said while a manager is standing there, is not neutral. It is heard by the manager, and the ordinary expectation is that the register lifts to accommodate them.
This is not a rule to memorise so much as a shift in what you are choosing for. The audience is everyone who can hear you.
Shifting when someone joins
The most common version is a senior person arriving mid-conversation. The convention is to shift up immediately, and it does not need to be graceful; nobody is judging the transition, and continuing in casual speech is far more noticeable than an abrupt change.
There is also a shift back down when they leave, which learners often forget. Staying formal with a friend after the manager has gone creates its own small distance.
| Japanese | Romaji | Meaning |
|---|---|---|
| あ、部長、お疲れさまです。 | A, buchō, otsukaresama desu. | Ah, manager, thank you for your work. |
| 今、その件について話していました。 | Ima, sono ken ni tsuite hanashite imashita. | We were just discussing that matter. |
| ちょうどよかったです。 | Chōdo yokatta desu. | Perfect timing. |
| ご存じでしたか。 | Gozonji deshita ka. | Were you aware of it? |
| 失礼しました、続けます。 | Shitsurei shimashita, tsuzukemasu. | Excuse me, I will continue. |
| さっきの話だけど、 | Sakki no hanashi da kedo, | About what we were saying, (back to casual) |
Summarising what you were discussing when a senior person joins is a useful habit. It brings them in, and it gives you a sentence in which to change register.
The inside and outside distinction
The rule that surprises learners most is that your own superiors become the inside group when you speak to someone outside your organisation. To a client, your manager is referred to by family name with no honorific, and their actions are described in humble terms.
This feels wrong, because you would never speak of your manager that way inside the company. It is not a demotion; it is a statement that your company is the group being humbled to the guest.
| Speaking to | About your manager | Form |
|---|---|---|
| A colleague | 部長 | Title, honorific |
| Your manager | 部長 | Honorific forms |
| A client | 田中 | Family name, humble |
| A client, about their staff | 田中様 | Honorific |
| Your family | 上司 | Neutral |
Adding an honorific to your own manager's name in front of a client is the single most common learner error in this area, and it is immediately audible.
Making introductions across a gap
Introductions have a conventional order: the less senior person is presented to the more senior one. In a business setting your own colleague is presented to the visitor, because the visitor is the outside party and ranks higher in that moment.
Learners often get the order right and the forms wrong, adding honorifics to their own side. The order and the forms have to match.
| Japanese | Romaji | Meaning |
|---|---|---|
| こちら、弊社の田中でございます。 | Kochira, heisha no Tanaka de gozaimasu. | This is Tanaka of our company. |
| こちらが山田様でいらっしゃいます。 | Kochira ga Yamada-sama de irasshaimasu. | This is Mr Yamada. |
| ご紹介させていただきます。 | Goshōkai sasete itadakimasu. | Allow me to introduce you. |
| 同僚の佐藤です。 | Dōryō no Satō desu. | This is my colleague Sato. |
| 友人の李さんです。 | Yūjin no Ri-san desu. | This is my friend Lee. |
| 以前からお世話になっております。 | Izen kara osewa ni natte orimasu. | We have been in their care for some time. |
Social groups with mixed ages
Outside work the same problem appears with less at stake. A group with a mix of ages, or one where you know some people well and others not at all, requires a single register that works for everyone.
The safe choice is the polite level, softened. It sounds slightly formal to your close friends, who will understand why, and it is correct for the people you have just met.
- Default to polite forms when a group is mixed or unfamiliar.
- Soften with casual endings rather than dropping the polite forms entirely.
- Follow the most senior person's lead if they relax the register.
- Return to polite forms when addressing the group as a whole.
- Do not use one register for one person and another for the next mid-conversation.
Practising the switch itself
What makes mixed audiences hard is not knowing the forms; it is producing them at a moment you did not choose. The manager arrives mid-sentence, and the register has to change while you are still holding the content of what you were saying.
That specific skill needs rehearsal, and it cannot be rehearsed alone because the trigger has to be unexpected. Roleplaying it with an AI Sensei in Unihongo's immersive 3D classroom lets you run the scenario repeatedly: a senior person joins, a client appears, a friend leaves, each time requiring the shift while the conversation continues.
The session report is worth reading specifically for leakage, since casual forms surviving into the polite stretch are the error that a colleague would notice and never mention. Running the same scene twice, once each way, is a cheap way to make both registers available rather than only the one you use most.
As a learner you have latitude here, and you will keep it. Getting the direction of humility right with clients matters more than getting every form right.