
AI Engineer/Japanese Language Educator
2/20/2026

"I was just explaining as hard as I could, but for some reason, the other person got scared." "I wasn't angry, but I was told to 'please calm down'."
Have you, as a Nigerian living or working in Japan, ever experienced this?
I have several very brilliant and passionate Nigerian students. They all have clear opinions and consider expressing them to be "sincerity." However, the stronger that passion is, the more often they are misunderstood by Japanese colleagues and bosses as being "scary" or "aggressive."
This is definitely not because you have a bad personality, nor because Japanese people are cowardly. In fact, it is simply a clash between two completely different "Communication OSs": Nigeria and Japan.
Nigerian-style "Sincerity (Confidence)" is expressed through a powerful voice and unwavering attitude. On the other hand, Japanese-style "Sincerity (Modesty)" is expressed through a quiet voice and consideration for others (humility).
In this article, I will share specific "volume adjustment techniques" to help you have your wonderful power and enthusiasm correctly received as "trust" in the Japanese environment, without diminishing them.
Let's look at the steps together to turn your enthusiasm into a "weapon" that functions correctly in Japan!
First, please understand that many Japanese people have learned to associate a "loud voice" with emergencies or emotional outbursts (especially anger).
In Nigerian culture (especially in energetic urban areas like Lagos), speaking with high energy is a positive sign of being "motivated," "truthful," and "confident." We call this the "Arousal level" of communication.
However, in Japanese society, keeping this arousal level low is considered "rational" and "professional."
| Item | Nigerian Style | Japanese Style |
|---|---|---|
| Voice Volume | Loud (No lies, proof of energy) | Modest (Calm, consideration for others) |
| Eye Contact | Staring strongly (Confidence, seriousness) | Looking away moderately (Humility, respect for others) |
| Gestures | Dynamic (Passionate, persuasive) | Minimal (Calm, restrained aesthetics) |
| Response to Silence | Filling with words (Silence is anxiety/boredom) | Thinking in silence (Silence is contemplation/harmony) |
Voice volume is directly linked to an invisible "psychological distance." The "appropriate voice volume" in Nigeria feels close to having one's personal space (one's own safe territory) trampled upon with muddy shoes for a Japanese person.
The more you try to make a serious, legitimate point, the more Japanese people feel that "this person is trying to force me to obey by brute force," and they close their minds as a defensive reaction.
Let's look at two actual examples here.
[Case 1: Asserting in a Meeting] Mr. A, a Nigerian working at an IT company, tried to explain to his boss that his team was not at fault for a project delay. To convey his enthusiasm, he stood up from his chair and spoke with a loud voice, using gestures. Result: The boss became speechless, and colleagues looked down. Later, Mr. A was shocked when his boss warned him, "You didn't have to shout like that."
[Case 2: Confirmation at a Convenience Store] Student B noticed that the change he received at a convenience store did not match the amount he paid. Trying to point out the mistake seriously, he walked up to the clerk and said in a strong tone, "This is wrong!" Result: The clerk panicked, felt terrified by B's expression, hid in the back, and tried to call the police. B just wanted the mistake corrected.
What these cases have in common is that "the person's intention (legitimate claim)" and the "method of expression (loud voice/strong attitude)" were converted into "violence" when passed through the Japanese filter.
So, how should you translate your "passion" into Japanese-style "sincerity"? I propose three specific steps you can use immediately.
First, consciously try to suppress the voice volume you think is "normal" to about 70%.
[Voice projection when giving an opinion to a boss]
(NG) "That is wrong!" (Sharp ending)
(OK) "I think that is a little different." (Gentle ending, lowering tone slightly)
Japanese people soften the impact by inserting "cushion words" before getting to the main point. This serves as a signal to the other person: "I am about to deliver words, but this is not an attack."
Specifically, use the following phrases as introductory remarks.
Especially when you have to say something negative, a Nigerian-style straight "No" shatters a Japanese person's heart.
[Example conversation when refusing a request]
Colleague: "Can you get this done by today?"
(Nigerian Style): "Impossible! I have other work!"
(Japanese Style): "Unfortunately, I am swamped with other matters right now, so it is a bit difficult. Would tomorrow be alright?"
When you lower your voice volume, you might worry, "Will my enthusiasm not be conveyed?" "Nodding" (Aizuchi) resolves that anxiety.
Instead of asserting your presence with your voice, send signs through visual actions that say, "I am listening to you" and "I am serious about this project."
To Japanese people, a person who nods deeply in silence appears "very calm and trustworthy." Try converting your overflowing energy from your voice to the movement of your neck.
Here, I will answer questions that Nigerian learners frequently face.
A: In Japan, it is the opposite. A "person with too loud a voice" risks being suspected of being immature and unable to control their emotions, or trying to hide a lack of substance with noise. Conversely, someone who speaks calmly with a carrying voice at an appropriate volume is highly evaluated as a "person with strong inner confidence."
A: In Nigeria, looking someone firmly in the eye is sincerity, but in Japan, "staring continuously" can be perceived as intimidation or provocation.
A: In Japanese restaurants, instead of shouting loudly, raise your hand and lightly say "Sumimasen" (Excuse me), or use the call button if available recently. If the staff is far away, just raising your hand lightly while aiming for eye contact is sufficient.
[NG Pattern]
(Voice echoing through the store) "Hey! Waiter! Sumimaseeeen!!!"
[OK Pattern]
(When they come close, at normal volume) "Sumimasen, may I order?"
Good job! Through this article, we have learned how to optimize your "passion" for Japanese society.
The important thing is to think, "Voice volume is not a weapon, but an instrument." If the venue changes, the tuning of the instrument must also change. Your energetic soul can stay as it is. Just by adjusting the output slightly to the Japanese style, the reaction of those around you should change surprisingly.
You are a being who can become a bridge between different cultures. When you can master both Nigerian power and Japanese harmonious communication, you will surely become a unique presence trusted by everyone.
We are always cheering for your challenge.