Searching for HGP Soei Kaku Gothic UB (HGP創英角ゴシックUB) usually leads to a few official paths rather than a simple standalone "free download" link, as it is a proprietary font developed by How to Get the Font Check Your System (Windows/Microsoft Office)
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If you are looking for a legitimate way to get and use this font, follow this guide: hgpsoeikakugothicub font free download
HG創英角ゴシックUB (HGP～/HGS～ 同梱) - デザインポケット hgpsoeikakugothicub font free download