Hello everyone, let me introduce myself, This is my first week, arrived in, ready to settle down, necessities, I'm planning to return to Japan, accounting

Hello Everyone, I'd like to introduce myself. I'm Runa from Japan. I just started here, This is my first week. I arrived at Sydney last Tuesday, so I'm ready to live here to buy some groceries and buy food, and so on. I already graduated from bachelor, so I'm supposed to returning Japan after this course. My major is accountatnt.

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Hello everyone, let me introduce myself. I'm Runa from Japan. I just started here, and this is my first week. I arrived in Sydney last Tuesday, so I'm ready to settle down here, buy groceries, food, and other necessities. I have already graduated with a Bachelor's degree and I'm planning to return to Japan after completing this course. My major is accounting.

Notes:

1. Changed "I'm supposed to returning Japan" to "I'm planning to return to Japan" for correct verb usage.

2. Replaced "live here to buy some groceries and buy food, and so on" with "settle down here, buy groceries, food, and other necessities" for clearer and more natural phrasing.

3. Corrected "accountatnt" to "accounting" for correct spelling.