diff --git a/src/main/resources/assets/spawn/lang/ja_jp.json b/src/main/resources/assets/spawn/lang/ja_jp.json
new file mode 100644
index 0000000..90a593a
--- /dev/null
+++ b/src/main/resources/assets/spawn/lang/ja_jp.json
@@ -0,0 +1,226 @@
+{
+  "spawn.item_group": "Spawn",
+  "item.spawn.spawn": "Spawn",
+
+  "subtitles.entity.spawn.fish.flop": "魚がバタバタする",
+  "subtitles.entity.spawn.fish.hurt": "魚がダメージを受ける",
+  "subtitles.entity.spawn.fish.death": "魚が死ぬ",
+    "subtitles.entity.spawn.fish.jump": "魚が跳ねる",
+  "subtitles.entity.spawn.fish.ambient": "魚が泳ぐ",
+
+  "entity.spawn.angler_fish": "チョウチンアンコウ",
+  "item.spawn.angler_fish_spawn_egg": "チョウチンアンコウのスポーンエッグ",
+  "item.spawn.angler_fish": "チョウチンアンコウ",
+  "item.spawn.angler_fish_bucket": "チョウチンアンコウ入りバケツ",
+  "subtitles.entity.spawn.angler_fish.deflate": "チョウチンアンコウがしぼむ",
+  "subtitles.entity.spawn.angler_fish.effect.give": "チョウチンアンコウが好意を示す",
+  "subtitles.entity.spawn.angler_fish.effect.deny": "チョウチンアンコウが疲れる",
+  "advancements.spawn.interact_with_angler_fish.title": "そのまま泳ぎ続けて",
+  "advancements.spawn.interact_with_angler_fish.description": "チョウチンアンコウに輝くアイテムを渡して好意を受け取る",
+
+  "entity.spawn.tuna": "マグロ",
+  "item.spawn.tuna_spawn_egg": "マグロのスポーンエッグ",
+  "item.spawn.tuna_chunk": "マグロの切り身",
+  "item.spawn.cooked_tuna_chunk": "焼いたマグロの切り身",
+  "item.spawn.tuna_sandwich": "ツナサンド",
+  "entity.spawn.tuna_egg": "マグロの卵",
+  "item.spawn.tuna_egg_bucket": "マグロの卵入りバケツ",
+  "subtitles.item.bucket.fill_tuna_egg": "マグロの卵をすくう",
+  "subtitles.entity.tuna_egg.hit": "マグロの卵がダメージを受ける",
+  "subtitles.entity.tuna_egg.broken": "マグロの卵が割れる",
+  "advancements.spawn.tuna_egg_in_a_bucket.title": "赤ちゃんが乗っています",
+  "advancements.spawn.tuna_egg_in_a_bucket.description": "バケツでマグロの卵をすくう",
+
+  "entity.spawn.seahorse": "タツノオトシゴ",
+  "item.spawn.seahorse_spawn_egg": "タツノオトシゴのスポーンエッグ",
+  "item.spawn.seahorse_bucket": "タツノオトシゴ入りバケツ",
+  "entity.spawn.seahorse.variant.predefined": "普通",
+  "entity.spawn.seahorse.variant.ridged": "隆線",
+  "entity.spawn.seahorse.variant.sharp": "鋭角",
+  "entity.spawn.seahorse.variant.hooded": "フード",
+  "entity.spawn.seahorse.variant.spotted": "斑点",
+  "entity.spawn.seahorse.variant.banded": "縞",
+  "entity.spawn.seahorse.variant.wavy": "波",
+  "entity.spawn.seahorse.variant.ribbed": "うねり",
+  "entity.spawn.seahorse.variant.curled": "巻き",
+  "subtitles.entity.spawn.seahorse.hurt": "タツノオトシゴがダメージを受ける",
+  "subtitles.entity.spawn.seahorse.death": "タツノオトシゴが死ぬ",
+  "subtitles.entity.spawn.seahorse.growl": "タツノオトシゴがうなる",
+  "subtitles.entity.spawn.seahorse.click": "タツノオトシゴのクリック音",
+
+  "entity.spawn.snail": "カタツムリ",
+  "item.spawn.snail_spawn_egg": "カタツムリのスポーンエッグ",
+  "item.spawn.snail_shell": "カタツムリの殻",
+  "block.spawn.snail_eggs": "カタツムリの卵",
+  "block.spawn.big_snail_shell": "大きなカタツムリの殻",
+  "block.spawn.snail_shell_tiles": "カタツムリの殻のタイル",
+  "block.spawn.snail_shell_tile_stairs": "カタツムリの殻のタイル階段",
+  "block.spawn.snail_shell_tile_slab": "カタツムリの殻のタイルハーフ",
+  "item.spawn.escargot": "エスカルゴ",
+  "block.spawn.potted_sweet_berry_bush": "スイートベリー入りの殻",
+  "block.spawn.mucus": "粘液",
+  "block.spawn.mucus_block": "粘液ブロック",
+  "block.spawn.ghostly_mucus_block": "幽霊粘液ブロック",
+  "subtitles.block.snail_eggs.hatch": "カタツムリの卵がかえる",
+  "subtitles.entity.snail.death": "カタツムリが死ぬ",
+  "subtitles.entity.snail.eat": "カタツムリがむしゃむしゃ食べる",
+  "subtitles.entity.snail.hurt": "カタツムリがダメージを受ける",
+  "subtitles.entity.snail.hurt_hidden": "カタツムリが殻で受け流す",
+  "subtitles.entity.snail.shell_grow": "カタツムリの殻が成長する",
+  "subtitles.entity.snail.lay_eggs": "カタツムリが卵を産む",
+  "subtitles.entity.snail.slide": "カタツムリが滑る",
+  "advancements.spawn.obtain_snail_shell.title": "シェルショック！",
+  "advancements.spawn.obtain_snail_shell.description": "カタツムリに飛び道具を当てて殻を一時的に外す",
+  "advancements.spawn.obtain_mucus.title": "スネイルド・イット",
+  "advancements.spawn.obtain_mucus.description": "粘液を手に入れる",
+  "advancements.spawn.got_stuck_in_mucus.title": "おっそ～～～～～～～～～～い",
+  "advancements.spawn.got_stuck_in_mucus.description": "カタツムリの通った跡にはまる……うぇっ！",
+  "advancements.spawn.went_through_ghostly_mucus.title": "はやっ",
+  "advancements.spawn.went_through_ghostly_mucus.description": "幽霊粘液ブロックを通り抜ける",
+
+  "entity.spawn.hamster": "ハムスター",
+  "item.spawn.hamster_spawn_egg": "ハムスターのスポーンエッグ",
+  "block.spawn.sunflower": "ヒマワリ",
+  "item.spawn.sunflower_seeds": "ヒマワリの種",
+  "item.spawn.roasted_sunflower_seeds": "炒ったヒマワリの種",
+  "subtitles.block.sunflower.seed_pickup": "種がポンとはじける",
+  "subtitles.entity.hamster.death": "ハムスターが死ぬ",
+  "subtitles.entity.hamster.eat": "ハムスターがもぐもぐ食べる",
+  "subtitles.entity.hamster.hurt": "ハムスターがダメージを受ける",
+  "subtitles.entity.hamster.step": "ハムスターがチョロチョロと走る",
+  "subtitles.entity.hamster.idle": "ハムスターがカタカタ鳴く",
+  "subtitles.entity.hamster.idle_call": "ハムスターが鳴く",
+  "advancements.spawn.open_hamster_inventory.title": "あ〜んして",
+  "advancements.spawn.open_hamster_inventory.description": "手懐けたハムスターの頬袋を開く",
+
+  "biome.spawn.ant_gardens": "アリの庭",
+  "entity.spawn.ant": "アリ",
+  "item.spawn.ant_spawn_egg": "アリのスポーンエッグ",
+  "block.spawn.anthill": "アリ塚",
+  "block.spawn.ant_mound": "アリの巣穴",
+  "block.spawn.rotten_log_anthill": "腐った丸太のアリ塚",
+  "block.spawn.ant_farm": "アリの飼育箱",
+  "block.spawn.rotten_planks": "腐った板材",
+  "block.spawn.cracked_rotten_planks": "ひび割れた腐った板材",
+  "block.spawn.rotten_door": "腐ったドア",
+  "block.spawn.rotten_trapdoor": "腐ったトラップドア",
+  "block.spawn.rotten_wood": "腐った木",
+  "block.spawn.rotten_log": "腐った原木",
+  "block.spawn.stripped_rotten_log": "樹皮を剥いだ腐った丸太",
+  "block.spawn.stripped_rotten_wood": "樹皮を剥いだ腐った板材",
+  "block.spawn.rotten_slab": "腐ったハーフブロック",
+  "block.spawn.rotten_stairs": "腐った階段",
+  "block.spawn.rotten_fence": "腐ったフェンス",
+  "block.spawn.rotten_fence_gate": "腐ったフェンスゲート",
+  "block.spawn.fallen_leaves": "落ち葉",
+  "item.spawn.music_disc_rot": "レコード",
+  "item.spawn.music_disc_rot.desc": "bunten - rot",
+  "item.spawn.ant_pupa": "アリの蛹",
+  "item.spawn.crown_pottery_sherd": "王冠の壺の欠片",
+  "item.spawn.spade_pottery_sherd": "シャベルの壺の欠片",
+  "subtitles.block.rotten_wood.crack": "木が割れる",
+  "subtitles.entity.ant.idle": "アリがチーチーと鳴く",
+  "subtitles.entity.ant.step": "アリが行進する",
+  "subtitles.entity.ant.hurt": "アリがダメージを受ける",
+  "subtitles.entity.ant.eat": "アリがついばむ",
+  "subtitles.entity.ant.death": "アリが死ぬ",
+  "subtitles.entity.ant.collect_resource": "アリが資源を集める",
+  "subtitles.entity.ant.hatch": "アリが孵化する",
+  "subtitles.block.anthill.enter": "アリがアリ塚に入る",
+  "subtitles.block.anthill.exit": "アリがアリ塚から出る",
+  "subtitles.block.anthill.work": "アリたちが働く",
+  "subtitles.block.anthill.resource": "アリ塚が何かを腐らせる",
+  "advancements.spawn.obtain_ant_pupa.title": "イエス、クイーン",
+  "advancements.spawn.obtain_ant_pupa.description": "アリの蛹を入手する",
+  "advancements.spawn.obtain_ant_farm.title": "永遠の家",
+  "advancements.spawn.obtain_ant_farm.description": "アリの飼育箱を作ってアリたちを家に連れて帰る",
+  "advancements.spawn.hatch_ant.title": "アリの一生",
+  "advancements.spawn.hatch_ant.description": "アリの蛹からペットのアリを孵化させる",
+
+  "block.spawn.algal_sand": "藻をかぶった砂",
+  "block.spawn.trimmed_seagrass": "整った海草",
+  "item.spawn.music_disc_blink": "レコード",
+  "item.spawn.music_disc_blink.desc": "Ninni - blink",
+
+  "entity.spawn.clam": "二枚貝",
+  "item.spawn.clam_spawn_egg": "二枚貝のスポーンエッグ",
+  "item.spawn.clam": "二枚貝",
+  "entity.spawn.clam.random": "ランダム",
+  "entity.spawn.clam.base.wedge_shell": "ナミノコガイ",
+  "entity.spawn.clam.base.scallop": "ホタテガイ",
+  "entity.spawn.clam.base.giant_clam": "オオシャコガイ",
+  "entity.spawn.clam.color.blue": "青",
+  "entity.spawn.clam.color.brown": "茶",
+  "entity.spawn.clam.color.purple": "紫",
+  "entity.spawn.clam.color.yellow": "黄",
+  "entity.spawn.clam.color.red": "赤",
+  "entity.spawn.clam.color.white": "白",
+  "entity.spawn.clam.color.cyan": "青緑",
+  "entity.spawn.clam.color.green": "緑",
+  "entity.spawn.clam.color.orange": "橙",
+  "entity.spawn.clam.pattern.no_pattern": "普通",
+  "entity.spawn.clam.pattern.striped": "縞",
+  "entity.spawn.clam.pattern.dotted": "ドット",
+  "entity.spawn.clam.pattern.tiled": "タイル",
+  "entity.spawn.clam.pattern.ridged": "隆線",
+  "item.spawn.shell_fragments": "貝殻の破片",
+  "item.spawn.clam_meat": "二枚貝の身",
+  "item.spawn.cooked_clam_meat": "調理済みの二枚貝の身",
+  "item.spawn.clam_chowder": "クラムチャウダー",
+  "item.spawn.clam_case": "二枚貝の箱",
+  "item.spawn.clam_case.fullness": "%s/%s",
+  "item.spawn.clam_case.desc": "収集した生物のみを保存する",
+  "block.spawn.clam_launcher": "クラムランチャー",
+  "block.spawn.pigment_shifter": "色相変幻装置",
+  "container.spawn.pigment_shifter": "カスタマイズ",
+  "container.spawn.pigment_shifter.no_water": "水中に設置する必要がある",
+  "container.spawn.pigment_shifter.body_plan": "体型を切り替え",
+  "container.spawn.pigment_shifter.body_plan.color": "体色を切り替え",
+  "container.spawn.pigment_shifter.pattern": "模様を切り替え",
+  "container.spawn.pigment_shifter.body_dye": "体の色を変更",
+  "container.spawn.pigment_shifter.pattern_dye": "模様の色を変更",
+
+  "entity.spawn.sea_cow": "ジュゴン",
+  "item.spawn.sea_cow_spawn_egg": "ジュゴンのスポーンエッグ",
+  "item.spawn.school_pottery_sherd": "群れの壺の欠片",
+  "item.spawn.shell_pottery_sherd": "貝殻の壺の欠片",
+
+  "entity.spawn.octopus": "タコ",
+  "item.spawn.octopus_spawn_egg": "タコのスポーンエッグ",
+  "item.spawn.captured_octopus": "捕獲したタコ",
+  "item.spawn.captured_octopus.no_container": "容器なし",
+  "spawn.container.isAlreadyLocked": "%s はすでにロックされている！",
+  "spawn.container.createdKey": "%s のキー属性を解除するには水の入ったかまどで洗う",
+  "spawn.item.isKey": "%s に紐付け済み",
+  "subtitles.item.goat_horn.octopus": "ヤギの角の再生に失敗した",
+
+  "entity.spawn.sea_lion": "アシカ",
+  "item.spawn.sea_lion_spawn_egg": "アシカのスポーンエッグ",
+
+  "entity.spawn.herring": "ニシン",
+  "item.spawn.herring_spawn_egg": "ニシンのスポーンエッグ",
+  "item.spawn.herring_bucket": "ニシン入りバケツ",
+  "item.spawn.herring": "ニシン",
+  "item.spawn.cooked_herring": "焼きニシン",
+
+  "entity.spawn.whale": "クジラ",
+  "item.spawn.whale_spawn_egg": "クジラのスポーンエッグ",
+  "block.spawn.whale_flesh": "クジラの肉",
+  "block.spawn.whale_uvula": "クジラの口蓋垂",
+
+  "entity.spawn.krill_swarm": "オキアミの群れ",
+  "item.spawn.krill_swarm_spawn_egg": "オキアミの群れのスポーンエッグ",
+  "item.spawn.krill_swarm_bucket": "オキアミの群れ入りバケツ",
+
+  "entity.spawn.sunfish": "マンボウ",
+  "item.spawn.sunfish_spawn_egg": "マンボウのスポーンエッグ",
+  "item.spawn.baby_sunfish_bucket": "マンボウの稚魚入りバケツ",
+  "advancements.spawn.breed_sunfish.title": "ベビーブーム！",
+  "advancements.spawn.breed_sunfish.description": "マンボウを2匹交配させる",
+
+  "item.spawn.chameleon_shed": "カメレオンの脱皮殻",
+  "item.spawn.chameleon_shed.color": "色: ",
+  "block.spawn.chameleon_shed_block": "カメレオンの脱皮ブロック",
+  "block.spawn.chameleon_shed_plates": "カメレオンの脱皮プレート",
+  "block.spawn.chameleon_shed_scales": "カメレオンの脱皮鱗",
+}