"こちらこそ" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "こちら",
        "2": "",
        "3": "こそ",
        "t1": "this person, I",
        "t2": "it is… that"
      },
      "expansion": "こちら (kochira, “this person, I”) + こそ (koso, “it is… that”)",
      "name": "com-ja"
    }
  ],
  "etymology_text": "こちら (kochira, “this person, I”) + こそ (koso, “it is… that”)",
  "forms": [
    {
      "form": "kochira koso",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "idiom",
        "2": "こちら こそ"
      },
      "expansion": "こちらこそ • (kochira koso)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese phrasebook",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "literally: this way, for sure; as in the thanks/apology should really be going this way (your way)"
        },
        {
          "english": "A: \"Thank you very much.\" B: \"No, thank you.\"",
          "roman": "A: \"Dōmo arigatō.\" B: \"Kochira koso.\"",
          "text": "A: 「どうもありがとう。」 B: 「こちらこそ。」"
        },
        {
          "english": "A: \"Forgive me.\" B: \"No, I'm the one that should be sorry. Forgive me.\"",
          "roman": "A: \"Gomen nasai.\" B: \"Īe, kochira koso. Gomen nasai.\"",
          "text": "A: 「ごめんなさい。」 B: 「いいえ、こちらこそ。ごめんなさい。」"
        }
      ],
      "glosses": [
        "I'm the one that should really be saying that."
      ],
      "id": "en-こちらこそ-ja-phrase-4Ik~aHAB",
      "raw_glosses": [
        "(used as a response) I'm the one that should really be saying that."
      ],
      "raw_tags": [
        "used as a response"
      ],
      "related": [
        {
          "roman": "dō itashimashite",
          "word": "どういたしまして"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "こちらこそ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "こちら",
        "2": "",
        "3": "こそ",
        "t1": "this person, I",
        "t2": "it is… that"
      },
      "expansion": "こちら (kochira, “this person, I”) + こそ (koso, “it is… that”)",
      "name": "com-ja"
    }
  ],
  "etymology_text": "こちら (kochira, “this person, I”) + こそ (koso, “it is… that”)",
  "forms": [
    {
      "form": "kochira koso",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "idiom",
        "2": "こちら こそ"
      },
      "expansion": "こちらこそ • (kochira koso)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "related": [
    {
      "roman": "dō itashimashite",
      "word": "どういたしまして"
    }
  ],
  "senses": [
    {
      "categories": [
        "Japanese compound terms",
        "Japanese entries with incorrect language header",
        "Japanese hiragana",
        "Japanese idioms",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese phrasebook",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "literally: this way, for sure; as in the thanks/apology should really be going this way (your way)"
        },
        {
          "english": "A: \"Thank you very much.\" B: \"No, thank you.\"",
          "roman": "A: \"Dōmo arigatō.\" B: \"Kochira koso.\"",
          "text": "A: 「どうもありがとう。」 B: 「こちらこそ。」"
        },
        {
          "english": "A: \"Forgive me.\" B: \"No, I'm the one that should be sorry. Forgive me.\"",
          "roman": "A: \"Gomen nasai.\" B: \"Īe, kochira koso. Gomen nasai.\"",
          "text": "A: 「ごめんなさい。」 B: 「いいえ、こちらこそ。ごめんなさい。」"
        }
      ],
      "glosses": [
        "I'm the one that should really be saying that."
      ],
      "raw_glosses": [
        "(used as a response) I'm the one that should really be saying that."
      ],
      "raw_tags": [
        "used as a response"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "こちらこそ"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "こちらこそ"
  ],
  "section": "Japanese",
  "subsection": "idiom",
  "title": "こちらこそ",
  "trace": ""
}