my configuration of Karabiner-Elements for AquaSKK(refs: https://pqrs.org/osx/karabiner/json.html)

aquaskk.json

{
    "title": "AquaSKK",
    "rules": [
        {
            "description": "Ctrl-J to Kana on Apple Terminal/iTerm2",
            "manipulators": [
                {
                    "type": "basic",
                    "from": {
                        "key_code": "j",
                        "modifiers": {
                            "mandatory": [
                                "control"
                            ]
                        }
                    },
                    "to": [
                        {
                            "key_code": "japanese_kana"
                        }
                    ],
                    "conditions": [
                        {
                            "type": "frontmost_application_if",
                            "bundle_identifiers": [
                                "^com\\.googlecode\\.iterm2$",
                                "^com\\.apple\\.Terminal$"
                            ]
                        }
                    ]
                }
            ]
        },
        {
            "description": "Ctrl-J to Kana on Apple Terminal/iTerm2 for Dvorak",
            "manipulators": [
                {
                    "type": "basic",
                    "from": {
                        "key_code": "c",
                        "modifiers": {
                            "mandatory": [
                                "control"
                            ]
                        }
                    },
                    "to": [
                        {
                            "key_code": "japanese_kana"
                        }
                    ],
                    "conditions": [
                        {
                            "type": "frontmost_application_if",
                            "bundle_identifiers": [
                                "^com\\.googlecode\\.iterm2$",
                                "^com\\.apple\\.Terminal$"
                            ]
                        }
                    ]
                }
            ]
        },
        {
            "description": "Ctrl-J to Kana on Apps",
            "manipulators": [
                {
                    "type": "basic",
                    "from": {
                        "key_code": "j",
                        "modifiers": {
                            "mandatory": [
                                "control"
                            ]
                        }
                    },
                    "to": [
                        {
                            "key_code": "japanese_kana"
                        }
                    ],
                    "conditions": [
                        {
                            "type": "frontmost_application_if",
                            "bundle_identifiers": [
                                "^org.mozilla.firefox$",
        			"^com.microsoft.Powerpoint$",
				"^com.google.Chrome$"
                            ]
                        }
                    ]
                }
            ]
        },
        {
            "description": "l to Eisuu on Apps",
            "manipulators": [
                {
                    "conditions": [
                        {
                            "bundle_identifiers": [
                                "^org\\.python\\.python$",
                                "^com\\.jetbrains\\."
                            ],
                            "type": "frontmost_application_if"
                        },
                        {
                            "type": "input_source_if",
                            "input_sources": [
                                {
                                    "input_source_id": "jp.sourceforge.inputmethod.aquaskk.Hiragana"
                                }
                            ]
                        }
                    ],
                    "type": "basic",
                    "from": {
                        "key_code": "l",
                        "modifiers": []
                    },
                    "to": [
                        {
                            "key_code": "japanese_eisuu",
                            "modifiers": []
                        }
                    ]
                }
            ]
        }
    ]
}