One of the very first stumbling blocks for anyone learning Japanese is the difference between the particles wa (は) and ga (が). The overview’s Kamakura beach passage happens to contain both of the most representative uses, side by side.
“Watashi wa” — setting up the topic
Kokoro’s opening line reads:
Watashi wa sono hito o tsune ni sensei to yonde ita. — I always called that person Sensei. (working translation)
Here, wa marks what the sentence is going to be about. It sets “I” (watashi) up as the topic of the discourse, and everything that follows — “always called that person Sensei” — is presented as information about that topic. The paragraph keeps going this way, holding “I” as the topic through “watashi wa sono hito no kioku o…” (“whenever I recall that person…”) and beyond.
“Watashi ga” — the subject inside a subordinate clause
And yet, in the second sentence of that same paragraph, watashi takes a different particle.
Watashi ga sensei to shiriai ni natta no wa Kamakura de aru. — It was in Kamakura that I first came to know Sensei. (working translation)
Why watashi ga, here and only here? Look closely at this sentence: the whole phrase “watashi ga sensei to shiriai ni natta” (“I came to know Sensei”) is bundled up by no into something functioning like a noun, and that bundle becomes the topic being explained by “wa Kamakura de aru” (“was Kamakura”). Japanese has a basic rule: inside a clause embedded within a larger sentence like this — a subordinate clause — you use ga, not wa, for the subject. “Watashi ga sensei to shiriai ni natta” is exactly this kind of embedded clause.
Another job for ga — flagging new information
Ga has another important function. At the beach, “I” spots Sensei instantly in the crowd. The reason is explained this way:
Watashi ga sugu sensei o mitsukedashita no wa, sensei ga hitori no seiyōjin o tsurete ita kara de aru. — The reason I found Sensei right away was that Sensei had a Westerner with him. (working translation)
“Sensei ga hitori no seiyōjin o tsurete ita” (“Sensei had a Westerner with him”) — the ga here marks the new piece of information that answers the implicit question: why did you spot him so quickly? If you swapped in sensei wa here instead, it would read more like a leisurely aside — “as for Sensei…” — and lose the sharp, pinpoint force of an answer to “what was the reason.”
Setting wa and ga side by side
Let’s organize the three representative uses this passage gives us.
| Example | Particle | Function |
|---|---|---|
| Watashi wa sono hito o tsune ni sensei to yonde ita | wa | Sets up the topic (“as for me…”) |
| Watashi ga sensei to shiriai ni natta no wa Kamakura de aru | ga | Subject inside an embedded (subordinate) clause |
| Sensei ga hitori no seiyōjin o tsurete ita kara de aru | ga | Marks the new information answering a question |
Wa builds a frame — “as for the person or thing already under discussion, or about to be” — around something. Ga marks the concrete subject or new information, either inside that frame or inside an embedded clause. Just being aware of this difference makes the skeleton of a Japanese sentence dramatically easier to see.
Worth checking as you read
First, the difference between wa and ga is not exhausted by the three uses covered here. There’s also a contrastive wa (“I like this, but I dislike that”) and a ga that marks the focus of a question word (“who came?”), among other important uses; this article confines itself to what can be confirmed from the Kamakura beach passage.
Second, the rule that ga appears inside subordinate clauses is a basic tendency of Japanese grammar, not an absolute rule without exception. Depending on context, wa can sometimes appear inside a subordinate clause too.
Summary
| Point | Content |
|---|---|
| Watashi wa | Sets up the topic of discourse. A frame meaning “as for me” |
| Watashi ga (subordinate clause) | The subject of a clause bundled into a noun-like unit by no |
| Sensei ga (new information) | Marks the central new information answering “why did I spot him?” |
| The basic distinction | Wa builds a frame; ga marks what fills it, or new information |
In short — wa builds a frame around what’s being discussed, while ga marks the concrete subject or new information inside it, or inside an embedded clause. Learning to spot this difference is the first step toward reading a Japanese sentence accurately.