syuuden mo tiensite ita node, sigoto no ato de mo kaereta.

も means also / too / even, depending on context.

In 終電も遅延していた, it suggests one of these ideas:

• the last train was delayed too
  → implying that other trains were delayed as well
• even the last train was delayed
  → emphasizing that not just regular trains, but even the final one was late

Also, も is replacing a particle like は or が here. So instead of saying something like 終電が or 終電は, the sentence uses 終電も.

遅延していた describes a state that was ongoing at that time.

• 遅延した = got delayed / was delayed
  This sounds more like the event happened.
• 遅延していた = was being delayed / was in a delayed state
  This focuses on the condition that the train was delayed at that time.

In this sentence, the speaker is explaining the situation that made it possible to get home. So 遅延していた fits well because it describes the train’s status when they needed it.

Yes, 遅れる is usually more common in everyday conversation.

Compare:

• 電車が遅れていた = the train was late/delayed
• 電車が遅延していた = the train was delayed

遅延する sounds a bit more formal or technical, and you often see it in announcements, news, or written language.
So this sentence is perfectly natural, but slightly more formal than using 遅れていた.

Both ので and から can mean because / since, but the nuance is different.

• ので sounds more explanatory, softer, and a bit more objective
• から can sound more direct or personal

So:

• 終電も遅延していたので、帰れた。
  = Since the last train was delayed, I was able to get home.

This sounds like calmly explaining the reason.

If you used から instead, it would still be grammatical, but slightly more direct:

• 終電も遅延していたから、帰れた。

A learner can think of ので as a very common way to give a reason in a smoother, less forceful way.

No—here でも does not mean but.

This is not the conjunction でも used at the start of a sentence.
Here it is the particle combination:

• で in あとで = part of the expression after
• も = also / even

So:

• 仕事のあとで = after work
• 仕事のあとでも = even after work / also after work

In this sentence, even after work is the most natural reading. It suggests that although it was already after work—probably fairly late—the speaker still managed to get home.

帰れた is the past form of the potential form 帰れる, so it means:

• was able to go home
• could get home

That is different from:

• 帰った = went home

The sentence is not just saying that the speaker went home. It is saying that, because the last train was delayed, going home was possible.

So the logic is:

• the last train was still available because it was delayed
• therefore, the speaker could get home

That is why 帰れた is important here.

Probably yes, but Japanese often leaves the subject unstated when it is understood from context.

So 帰れた could mean:

• I was able to get home
• we were able to get home
• he/she was able to get home

In many everyday situations, a listener would naturally understand it as I unless the context says otherwise.

This is very normal in Japanese. Subjects are often omitted when they are obvious.

The sentence breaks down like this:

• 終電も = the last train too / even the last train
• 遅延していた = was delayed
• ので = because / since
• 仕事のあとでも = even after work
• 帰れた = was able to go home

So the structure is:

[Reason] ので、[Result]

More literally:

Because even the last train was delayed, I was able to go home even after work.

This is a very common Japanese pattern:

• first give the reason
• then give the result

Both are theoretically possible, because も can mean too or even. But in this sentence, even after work is the more natural interpretation.

Why?

Because the sentence is explaining that the train delay created an opportunity. That makes even fit better:

• Even though it was already after work / even at that late point, I could still get home.

If the context were comparing two times or situations, then too might be possible. But without special context, learners should read it as:

• even after work

Not exactly. The sentence has two も particles:

• 終電も
• 仕事のあとでも

They are both the same particle grammatically, but their English translations can differ depending on what sounds natural.

For example:

• 終電も → the last train too or even the last train
• 仕事のあとでも → even after work

This is very common in Japanese. A single particle like も has a core meaning of addition / inclusion / emphasis, but the best English translation changes with context.

So it is better to understand the role of も than to force one fixed English word every time.