Let's study hard each other

I am seriously looking for my a study partner.
I'm interested in someone who would like to be my study partner.
He can Japanese but just a little. My study partner can speak a little Japanese.
and I have poor English. My English is not good (at all).
So I want to be able to speak better in English for he. So I want to speak better English for my study partner.
I can teach my study partner Japanese.
Let's then study hard with each other. each other's native language.

1.) Let's study hard each other

I am seriously looking for 2.) my study partner.
I'm interested in someone.
3.) can Japanese but just a little.
and I have poor English.
4.)So I want to be able to speak better in English for he.
I can teach Japanese,
Let's study hard with each other.

Hello Mirai,

Here are some corrections to your note; they will help your notes read more smoothly.

1.) Instead of "Let's study hard each other", it is more natural to say "Let's study hard together!"

2.) While this sentence is grammatically correct, it is better to say "I am seriously looking for a study partner." This allows for easier understanding and word flow. 

3.) This is a good series of sentences, but it may be more understandable if you made the following corrections:

"I am interested in someone. He can speak Japanese just a little. And I have poor English."

These sentences can easily be combined into:

"I am interested in someone. He can only speak a little Japanese, and my English is poor."

4.) "So I want to be able to speak better in English for he." There are a few problems with this sentence, but they can be easily fixed.

It's better to say: "I want to be able to speak better in English for him." or "I want to be able to speak better English for him."

Notice the use of "him" instead of "he", in these examples?

Here are some other examples of how to use the pronouns "he" and "him":

"Benjamin loves painting pictures; he is a good artist."

"Because Benjamin loves painting pictures, I gave him a paint brush."

Let's study hard each other

Let's study Englsih together!

I am seriously looking for my study partner.

I am really looking forward to seeing someone who is interested in English.

I'm interested in someone.

He can Japanese but just a little.

and he can konw Japanese a little

and I have poor English.

And my English is not quite good.

So I want to be able to speak better in English for he.

so I want to become better in speaking English.

I can teach Japanese,

Let's study hard with each other.