Say you are going, coming, or returning: 行く, 来る, 帰る

Mental Model: The Deictic Center (Motion Anchored to the Speaker)

In Japanese, motion verbs are strictly deictic: their direction is measured exclusively relative to where the speaker physically stands at the moment of speaking:

• Moving Away from the Speaker (行く(いく) (to go)): Motion heading toward any location away from the speaker's current coordinate.
• Moving Toward the Speaker (来る(くる) (to come)): Motion traveling toward where the speaker is right now.
• Returning to One's Base (帰る(かえる) (to return home)): Motion directed toward one's personal home, home country, or institutional headquarters.

The Cardinal English Trap: Never Say *今、来ます!

In English, when someone in another room shouts, “Dinner is ready!” or a friend calls asking where you are, you naturally reply: “I'm coming!”

In Japanese, saying *今、来ます is completely ungrammatical:

• Because the listener is at another location, your physical body must travel away from your current spot.
• Therefore, from your own perspective as the speaker, you are going, not coming!
• Correct: 今、行きます！(いま、いきます！) (“I'm on my way! / I'm coming [going to you]!”).
• You only use 来ます when someone is moving toward your current location: 友達が うちに 来ます。(ともだちが うちに きます。) (“A friend is coming to my place.”).

The Special Anchor of 帰る (Going Home)

帰る is not a generic synonym for “to go back”. It is deeply anchored to one's belonging place:

• Valid Destinations for 帰る: Personal residence (うちへ 帰ります。(うちへ かえります。) = “I'm going home”), home country (国へ 帰ります。(くにへ かえります。) = “returning to my native country”), or returning from an errand to one's company (会社へ 帰ります。(かいしゃへ かえります。)).
• Temporary Stops Do Not Take 帰る: If you are returning to a hotel on vacation or going back to a coffee shop where you left your jacket, use 戻る(もどる) (to return / turn back), not 帰る!

Destination Particles: へ vs に

Both particles attach to destinations, with a subtle difference in focus:

• The Direction Vector (へ): Emphasizes the journey and orientation toward the destination (日本へ 行きます = “heading toward Japan”).
• The Target Coordinate (に): Emphasizes the final arrival point (日本に 行きます = “going to Japan [and landing there]”).
• In standard daily conversation, they are interchangeable.