My Best Friend ^^*

I got a message via the 'Kakao Talk' when I was hanging out with my friend, which was

from my another best friend from Japan.

I wasn`t sure if he will visit to Korea to meet up with me during his vacation, but

I forced my Korean friend who was hanging out with me at the time, saying like that "You must drive instead of me when my friend from Japan comes to Korea."

However, I also know I`m quite lucky because I have good friends who always like to help me or support me whatever I want to do.

Eventually he got a word saying that he will hang up with my friend from Japan, and he will drive a car when he should do.

I'm not sure about the part in blue. Maybe "which he should do?"

I really miss my friend in Japan who used to be hang out with me every Thursday when he lived in Korea.

from my another best friend from Japan. (or: While I was hanging out with my friend(/one of my friends), I got a message over Kakao Talk from my other best friend from Japan.)

I wasn`t sure if he would visit to Korea to meet me up during his vacation, but

I prevailed upon my Korean friend who was hanging out with me at the time, saying something like "You must drive instead of me when my friend from Japan comes to Korea.

He complained saying that he would not drive instead of me.

Eventually he got a word(<-- what?) saying that he will hang out with my friend from Japan, and he will drive a car when he should do.

I got a message via the app 'Kakao Talk' when I was hanging up my friend, which was

from my another best friend from Japan.

I succeeded in forcing my Korean friend who was hanging up with me at that time, saying something like "You must drive instead of me when my friend from Japan comes to Korea.

it`s definitely useless because I know him, and he will at least he will try to help me.

However, I also know I`m quite lucky because I have good friends who always like to help me or support me in whatever I want to do.

Eventually he gave his word / made a promise (I'm not sure if this is what you mean.) saying that he will hang up ("hang out"?) with my friend from Japan, and he will drive a car when he should do.

I really miss my friend in Japan who used to hang out (?) with me every Thursday when he lived was living here in Korea.

He was is my best friend.

He is still your best friend now, I assume.