Acumin with Yaku Han JP in action on knap.jp

Under the hood

.header-1 { font-family: acumin-pro, sans-serif; font-size: 56px; font-style: normal; font-weight: 700; letter-spacing: 0px; line-height: 56px; text-transform: none; color: #000000; }
.content-1 { font-family: acumin-pro, sans-serif; font-size: 12px; font-style: normal; font-weight: 700; letter-spacing: 1px; line-height: 12px; text-transform: none; color: #000000; }
.content-2 { font-family: YakuHanJP, dnp-shuei-gothic-gin-std, 游ゴシック, "Yu Gothic", YuGothic, メイリオ, "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3", "Lucida Grande", Osaka, Verdana, "ＭＳＰゴシック", sans-serif; font-size: 20px; font-style: normal; font-weight: 700; letter-spacing: 1px; line-height: 20px; text-transform: none; color: #000000; }
.content-3 { font-family: YakuHanJP, dnp-shuei-gothic-gin-std, 游ゴシック, "Yu Gothic", YuGothic, メイリオ, "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3", "Lucida Grande", Osaka, Verdana, "ＭＳＰゴシック", sans-serif; font-size: 16px; font-style: normal; font-weight: 500; letter-spacing: 1px; line-height: 32px; text-transform: none; color: #000000; }

Acumin is available from Fontspring and Typekit.