Made by Tetsuaki Hamano using the following materials: Columns block, Group block.
<!-- wp:group {"align":"full","layout":{"contentSize":"1000px"}} -->
<div class="wp-block-group alignfull"><!-- wp:columns {"verticalAlignment":"top","style":{"spacing":{"blockGap":"0px"}}} -->
<div class="wp-block-columns are-vertically-aligned-top"><!-- wp:column {"verticalAlignment":"top","width":"61.8046%","style":{"color":{"background":"#010101"}}} -->
<div class="wp-block-column is-vertically-aligned-top has-background" style="background-color:#010101;flex-basis:61.8046%"><!-- wp:group {"style":{"spacing":{"padding":{"top":"308px","right":"0px","bottom":"308px","left":"0px"}},"border":{"style":"solid","width":"1px","radius":"308px","color":"#fefefe"}}} -->
<div class="wp-block-group has-border-color" style="border-color:#fefefe;border-radius:308px;border-style:solid;border-width:1px;padding-top:308px;padding-right:0px;padding-bottom:308px;padding-left:0px"></div>
<!-- /wp:group --></div>
<!-- /wp:column -->
<!-- wp:column {"verticalAlignment":"top","style":{"color":{"background":"#222222"}}} -->
<div class="wp-block-column is-vertically-aligned-top has-background" style="background-color:#222222"><!-- wp:group {"style":{"spacing":{"padding":{"top":"190px","right":"0px","bottom":"190px","left":"0px"}},"border":{"style":"solid","width":"1px","radius":"190px","color":"#fefefe"}}} -->
<div class="wp-block-group has-border-color" style="border-color:#fefefe;border-radius:190px;border-style:solid;border-width:1px;padding-top:190px;padding-right:0px;padding-bottom:190px;padding-left:0px"></div>
<!-- /wp:group -->
<!-- wp:group {"style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}}} -->
<div class="wp-block-group" style="margin-top:0px;margin-bottom:0px"><!-- wp:columns {"style":{"spacing":{"padding":{"top":"0px","right":"0px","bottom":"0px","left":"0px"},"blockGap":"0px"}}} -->
<div class="wp-block-columns" style="padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px"><!-- wp:column {"style":{"color":{"background":"#666666"}}} -->
<div class="wp-block-column has-background" style="background-color:#666666"><!-- wp:group -->
<div class="wp-block-group"><!-- wp:columns {"style":{"spacing":{"blockGap":"0px"}}} -->
<div class="wp-block-columns"><!-- wp:column {"width":"61.8046%","style":{"color":{"background":"#888888"}}} -->
<div class="wp-block-column has-background" style="background-color:#888888;flex-basis:61.8046%"><!-- wp:group {"style":{"spacing":{"padding":{"top":"44px","bottom":"44px"}},"border":{"width":"1px","style":"solid","radius":"44px","color":"#fefefe"}}} -->
<div class="wp-block-group has-border-color" style="border-color:#fefefe;border-radius:44px;border-style:solid;border-width:1px;padding-top:44px;padding-bottom:44px"></div>
<!-- /wp:group --></div>
<!-- /wp:column -->
<!-- wp:column {"style":{"color":{"background":"#aaaaaa"}}} -->
<div class="wp-block-column has-background" style="background-color:#aaaaaa"><!-- wp:group {"style":{"spacing":{"padding":{"top":"27px","bottom":"27px"}},"border":{"width":"1px","style":"solid","radius":"27px","color":"#fefefe"}}} -->
<div class="wp-block-group has-border-color" style="border-color:#fefefe;border-radius:27px;border-style:solid;border-width:1px;padding-top:27px;padding-bottom:27px"></div>
<!-- /wp:group -->
<!-- wp:group {"style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}}} -->
<div class="wp-block-group" style="margin-top:0px;margin-bottom:0px"><!-- wp:columns {"style":{"spacing":{"blockGap":"0px"}}} -->
<div class="wp-block-columns"><!-- wp:column -->
<div class="wp-block-column"><!-- wp:group {"style":{"spacing":{"padding":{"top":"17px","bottom":"17px"}}}} -->
<div class="wp-block-group" style="padding-top:17px;padding-bottom:17px"></div>
<!-- /wp:group --></div>
<!-- /wp:column -->
<!-- wp:column {"width":"61.8046%","style":{"color":{"background":"#cccccc"}}} -->
<div class="wp-block-column has-background" style="background-color:#cccccc;flex-basis:61.8046%"><!-- wp:group {"style":{"border":{"width":"1px","style":"solid","radius":"296px","color":"#fefefe"},"spacing":{"padding":{"top":"16px","bottom":"16px"}}}} -->
<div class="wp-block-group has-border-color" style="border-color:#fefefe;border-radius:296px;border-style:solid;border-width:1px;padding-top:16px;padding-bottom:16px"></div>
<!-- /wp:group --></div>
<!-- /wp:column --></div>
<!-- /wp:columns --></div>
<!-- /wp:group --></div>
<!-- /wp:column --></div>
<!-- /wp:columns --></div>
<!-- /wp:group -->
<!-- wp:group {"style":{"spacing":{"margin":{"top":"0px","bottom":"0px"}}}} -->
<div class="wp-block-group" style="margin-top:0px;margin-bottom:0px"><!-- wp:group {"style":{"border":{"width":"1px","style":"solid","radius":"72px","color":"#fefefe"},"spacing":{"padding":{"top":"72px","bottom":"72px"}}}} -->
<div class="wp-block-group has-border-color" style="border-color:#fefefe;border-radius:72px;border-style:solid;border-width:1px;padding-top:72px;padding-bottom:72px"></div>
<!-- /wp:group --></div>
<!-- /wp:group --></div>
<!-- /wp:column -->
<!-- wp:column {"width":"61.8046%","style":{"color":{"background":"#444444"}}} -->
<div class="wp-block-column has-background" style="background-color:#444444;flex-basis:61.8046%"><!-- wp:group {"style":{"spacing":{"padding":{"top":"117px","bottom":"117px"}},"border":{"width":"1px","style":"solid","radius":"117px","color":"#fefefe"}}} -->
<div class="wp-block-group has-border-color" style="border-color:#fefefe;border-radius:117px;border-style:solid;border-width:1px;padding-top:117px;padding-bottom:117px"></div>
<!-- /wp:group --></div>
<!-- /wp:column --></div>
<!-- /wp:columns --></div>
<!-- /wp:group --></div>
<!-- /wp:column --></div>
<!-- /wp:columns --></div>
<!-- /wp:group -->