I've never traveled alone yet. >>Correct!
Of course, I have wandered around the city which is close to my home.
>>Correct!
the standard of "close" is time needed for movement.
>>The standard for a place to be 'close' is the required travel time.
Seoul is really small city.
>>Seoul is certainly a small city.
So I can go everywhere in Seoul alone.
>>Correct!
But out of Seoul, Cities including Busan, Daegu are difficult for me to visit alone.
>>But beyond Seoul are cities including Busan, and Daegu difficult for me to visit alone.
Because these cities take about 3 hours by bullet train called KTX(one way), and this transport is really expensive.
>>This is because it takes about 3 hours to reach these cities by a one-way bullet train called KTX, which transportation fee is also high-priced.
Hence, it's better to trip for 2 days at least.
>>Hence, it's better if you would have at least two days to spend.
If I come back home within the day, what a waste of money!
>>If it's only for a day, it would be a waste of money!
And if I trip for 2 days at least, I have to reservate the accommodation, and it is really expensive, too.
>>For trips that last for at least two days, I would need to reserve accommodation which costs a fortune, too.
When I travel with my friends, we can devide our room charge.
>>When I travel with my friends, we usually divide the room charge.
But I have to pay all costs by myself.
>>But, I have to pay for everything else myself.
So, costs are the main reason why I don't go trip alone.
>>So, costs are the main reason why I don't go on trips alone.
And safety is second reason.
>>Safety comes next.
there can be a dangerous situation if an woman wander at late night.
>>There are possible dangers if a woman wanders late at night.
It's not a main case, of course.
>>Though, it is not very likely.
However my parents worry about this, and me either.
>>But, my parents worry about it and so do I.