These are the conlangs made by Gibberish Inspired based after the Japanese language or some other Japonic language (etc. Ryukyuan, Pre-Kara)
Thomatan - Japanese/Greek
-Thomatan is spoken in Greece.
Gyan - Ryukyuan/Chinese
-Gyan is spoken in China.
Chantagongese - Japanese/Ryukyuan/Philippine/Formosan/Korean/Capondoan
-Chantagongese is spoken in Korea.
Katamakian - Japanese/Greek/Ainu
Jowan - Japanese/Javanese/Dravidian
-Jowan is spoken in Borneo & Java
Sadanese - Japanese/Batak/Malay
-Sadanese is spoken in Sumatra
Kazingkuan - Japanese/Ryukyuan
Okhutsk - Japanese/Chukchi/Yakut/Kamchatkan/Nivkh/Yukaghir
-Okhustk is spoken by ocean travelling peoples of the Siberian sea of Okhutsk.
Gornakan - Japanese/Germanic
Kimakuan - Japanese/Hawaiian
-Kimakuan is spoken by Japanese immigrants in Hawaii.
Walapokan - Japanese/Ahoroan/Asorian
-Walapokan is spoken in Sweden.
Umetskan - Japanese/Russian/Ainu/Nivkh
-Umetskan is spoken in the Sakhalin Island.
Roskatokese - Japanese/Ryukyuan/Pre-kara
Laperodoan - Japanese/Spanish/Celtic
-Laperodoan is spoken in Spain.
Formosan Creole - Japanese/various Formosan languages/Chinese
-Formosan Creole is spoke in Taiwan.
Shalibanese - Japanese/Manchu/other Tungusic/Chinese
-Shaliban is spoken in Manchuria.
Monabatoan - Ryukyuan/Tungusic/Maranotoan
-Monabatoan is spoken east of Manchuria.
Popan - Japanese
Ariyoan - Japanese/Iranian/Turkic
-Ariyoan or Ariyuan is spoken in northern Iran & southwestern Turkmenistan.
Haramadan - Japanese/Arabic
Haramadan is spoken in the Arabian Peninsula.
Hakoan - Japanese/Arabic
-Hakoan is spoken in the Kingdom of Hako, located northwest of Tokyo.
Sokoan - Japanese/French
-Sokoan is spoken in the Kingdom of Soko, located on Hokkaido.
Ozatan - Ryukyuan/Capondoan/French/Occitan
-Ozatan is spoken in southern France.
Kasatakian - Japanese/spanish/Turkic/Finnic/Greek
-Kasatakian is spoken in the micronation of Kasataki, located in the Polynesian Islands.
Yamatharan - Japanese
Maronotoan - Japanese/Capondoan/Tungusic/Korean
-Maronotoan is spoken around Vladivostok.
Chakaztan - Japanese/Mayan
-Chakaztan is spoken in Belize.
Annan - Japanese/Inuit
-Annan is spoken in mainland Nunavut.
The Kagan Languages has it's origin in Japanese but are very different. NOTE, NOT ALL KAGAN LANGUAGES WILL BE LISTED HERE.
Stage 1 Proto-Kagan - Japanese/Sanskrit
Stage 2 Proto-Kagan - S1PK/Balinese/Malay/Javanese/Sasak/Madurese
Stage 3 Proto-Kagan - S2PK/Tamil/Malayalam/Sinhala/Telugu/Kannada/Tunu
Stage 4 Proto-Kagan - S3PK/Swahili/Kikuyu/Masai/Sukuma/Bantu & Nilo-Saharan Languages from zones G, F, & E
Proto-Etiopian - S4PK/Turkana/Oromo/Somali/Wollaytta/Ethiopian/Afar
Kagan - S4PK/Ganda/Sango/Lingala/Kongo/Luba/Lunda/various other Bantu languages from zones C, D, L, K, M, & J
Early Kengan - Kagan/Stivontian/Lingala/Kituba/Sango/various other Bant languages from zones C, D, L, K, B, H, M
Modern Kengan - Early Kengan/Japanese
Grondelic - Kagan/Grendish/English
Goidelic - Kagan/Hindi/Bhojpuri/other Indo-Aryan
Goranian - Kagan/Russian
Nessemese - Kagan
Agujan - Kagan
Kwagan - Kagan/Zone J Bantu/Zone F Bantu
Gojan - Kagan/Zone A Bantu