Manga History Poster on Japan's 150-Year Gap

Prompt

{"type":"Japanese educational history infographic poster","theme":"Ancient Japanese history explained in a loud, comedic manga style for children","audience":"elementary school learner","language":"Japanese","format":"single-page vertical poster with 8 major colored bands plus a bottom summary banner","style":{"illustration":"hyper-energetic manga, exaggerated reaction faces, thick outlines, bright primary colors, dense handwritten callouts, classroom-friendly but chaotic and funny","rendering":"clean digital illustration with infographic layout, comic sound effects, arrows, labels, maps, diagrams, and spot character mascots","mood":"exciting, humorous, educational, dramatic"},"headline":{"main":"{argument name=\"headline text\" default=\"日本史の空白の150年、ざっくり言うとこう!\"}","sub":"{argument name=\"subtitle text\" default=\"卑弥呼のあと、記録がスカスカ!? でもこの時代、ヤマト王権が育っていく超重要フェーズ\"}"},"mascot":{"type":"cartoon dog professor mascot","count":4,"appearance":"small white-and-tan dog with round sunglasses or goggles in some panels, expressive mouth, costume changes including scholar outfit and explorer/adventurer accessories, used as reaction commentator in the corners and bottom banner"},"layout":{"sections":[{"title":"1 そもそも“空白の150年”って何?","position":"top band","count":1,"elements":["text block explaining the idea of a 150-year gap after Himiko","small portrait of 卑弥呼","small portrait of 台与","large notebook-like timeline labeled 266年ごろ to 413年ごろ with a red arrow across the gap","big note saying 記録うすっ!" ]},{"title":"2 なんで空白になったの?","position":"second band","count":1,"elements":["left explanatory text","dramatic dark manga face with text like 記録が消えた!?","mini sequence showing 魏 → 晋","battle scene explosion callout saying その後また大混乱!!","caption about Chinese dynastic change and war reducing records","right-side reaction character with speech about records and work"]},{"title":"3 日本列島では何が起きてた?","position":"third band","count":1,"elements":["left text about no single unified nation yet","row of 5 small local-force figures labeled 吉備, 出雲, 筑紫, 東国, 近畿など","arrow toward a palace/settlement scene labeled 奈良盆地（大和）に勢力が集まる!","armored ruler figure near the center-right","happy crowd at far right with callout about ヤマト王権の芽生え!" ]},{"title":"4 古墳がドーン! 権力の見える化","position":"fourth band","count":1,"elements":["left text about giant tombs appearing in the late 3rd century","large aerial illustration of a key...