Rejoice, I'll love you deeply -Explosive proposal sex from an S-class heir

Story :  "How amazing. My hands are soaking wet because of you." I'm being attacked both inside and out... Even though I'm embarrassed by it, to think it feels this good...! The plain office lady, Fuka Asayama, happened to help Tsubasa Kisaragi, the president's son, while passing by. Just a simple act of kindness, nothing more, yet he misinterpreted it as "I've received your love," something outrageous...? Luxury hotels, private jets... Wherever they went, he relentlessly sought Fuka. "Saying no is also an expression of fondness." Even though I'm telling him that he's wrong... The extraordinary and explosive love of the S-class heir knows no bounds...!