Separate three different language choices
There is the language of the app's menus, the language used to explain a point, and the Japanese you are learning. These choices often match your preferences in different ways. A learner can use a Spanish interface, request Spanish grammar explanations, and still read Japanese examples without romaji. Saying which layer should change prevents a broad request such as 'more Japanese' from removing support you still need.
Tell the tutor what you want to do with the explanation. 'Explain the difference briefly in Korean, then test me in Japanese' is a usable teaching instruction. 'Speak my language' does not say whether the examples, quiz prompts, answer options, or follow-up discussion should change.
Use one familiar sentence as a bridge
Start with something concrete, such as 今日は忙しいです: 'I am busy today.' The word order and omitted subject may differ from the language you normally speak. Ask for the meaning and the role of each part, then change today to tomorrow. This lets you test whether you understood the Japanese structure instead of merely matching an entire sentence to its translated equivalent.

| Japanese | Romaji | Meaning |
|---|---|---|
| 今日は忙しいです。 | Kyō wa isogashii desu. | I am busy today. |
| 明日は忙しいです。 | Ashita wa isogashii desu. | I will be busy tomorrow. |
Delay the translation when recognition becomes too easy
If you always read the familiar-language line first, the Japanese may become decorative. Change the sequence rather than removing translation forever. Try reading the Japanese, making a prediction, and revealing the explanation afterward. When the prediction is wrong, identify the exact clue you missed. A single word, tense ending, or particle is a better review target than a vague note that the whole sentence was difficult.
Reduce support in one dimension at a time
Do not simultaneously increase vocabulary, lengthen sentences, remove translations, and add time pressure. You will not know which change made the task difficult. Keep the topic and sentence length steady while you hide the meaning of one example. Once that is manageable, change another condition. The objective is a clearer view of your Japanese understanding, not the appearance of an advanced lesson.
Use feedback to keep the preference current
A useful preference is specific enough to guide the next response but flexible enough to change. Tell Mocchi when an explanation contains too much terminology, when a translation hides an important contrast, or when you would prefer a short comparison in your first language. If an explanation still seems inconsistent, ask for a simpler example and consult a trusted reference rather than assuming that a fluent translation makes every linguistic claim correct.

