WhyThe reason I'm studying English so hard?

Today's post includes a delicate expression.,

Pso please be specifiedwarned that this is R18+.

I feel like this sentence makes this post feel more sensitive than it actually is. In my opinion "Note that this post includes a delicate expression, so this is slightly NSFW." would be more appropriate."NSFW" is similar to "R18+".

When I was a college student, I read some guidebooks in a libralry to travel to America someday.

There weren'tBack then we didn't have laptops, smartphones, or internet in those days.

I learned from a bookFrom a book I learned that I would have to fill out an immigration form in a plane on travellingflight.

The book said that the items on an immigration form we have to write are as follows,:

etc.

(I knew laterLater I found out that most countries require immigration cards. )

I thought about it over and over and eventually decided I would write "Once a month", even though I didn't have a girlfriend back then.

After I joined the current company,One day there was a drinking party one dahosted by my current company.

Everyone has an animated conversationtalked about someone that wrote "once a week" on the sex column in the immigration form.

Then I was supposed to go to Taiwan for trainings then.

Immigration can be applied online and the sex column kindly says "Mr/Ms" or "M/F" so that we don't mistake it.

Still, I took the senpai's warning to heart and aI'm studying English hard.

When I was a college student, I read some guidebooks in a libralry to travel to America someday.

There weren't laptops, smartphones, or internet in those days.

I learned from a book that I would have to fill out an immigration form in athe plane on travelling.

I was surprised I haved to write such a thing. for No.5

Your sentence is clear, but this makes it sound more natural!

(I knewfound out later that most countries require immigration cards. )

Everyone hasd an animated conversation about how someone wrote "once a week" on the sex column in the immigration form.

A senpai said to me, "I don't think anyone really wirites such a thing wrongly, but you have to write male or man on that column, not how often you do that.

I was gobsmacked atby that.

How difficult is English is?!

At the time I was supposed to go to Taiwan for trainings then.

I would almost wriote "Once a month" as I prepared.

Why I'mam I studying English so hard?

Please be specifiedadvised that this post is R18+.

"warned"より"advised"の方は丁寧。
しかしどっちでも英語ではよく言われる。

When I was a college student, I read some guidebooks in a libralyry, looking to travel to America someday.

There weren't laptops, smartphones, or the internet in those days.

I learned from a book that I would have to fill out an immigration form ion athe plane onwhile travelling.

The book said that the items on an immigraion form that we have to writefill in are as follows,:

3. Birth date

I was surprised about Nno. 5.

I have to write such a thing.?

(I klearnewd later most countries require immigration cards. )

I thought it over and decided I would write "Oonce a month" even though I didn't have a girlfriend then.

After I joined themy current company, there was a drinking party one day.

Everyone hasd an animated conversation about someonewith me about the time when I wrote "once a week" on the sex column inof the immigration form.

一番自然なようは：
Everyone was tickled when I told them about the time when I wrote "once a week" on the sex column of the immigration form.
と思います。

A senpai said to me, "I don't think anyone really wirtes such a thingcan write that wrongly, but you haveare supposed to write 'male' or 'man' on that column, not how often you do that.

I was gobsmacked atby that.

I was supposed to go to Taiwan for trainings then.

I would almost wriote "Oonce a month" as I prepared to disembark.

Immigration can now be applied online, and the sex column kindly says "Mr/Ms" or "M/F" so that we don't mistake it.

Still, I took the senpai's warning to heart and am studying English hard now.

ちなみに、senpaiという言葉は英語なら正式に存在しません。
一番近い翻訳は「senior」です。

自然を求めるなら、この状況は「senpai」より同僚の「colleague」を書いた方がいいです。先輩と後輩というのコンセプトは、英語ではあまり強調しない。