Sexual Training manga & manhwa

Art Lapsa has 2 Sexual Training series translated into English, with the most recently updated first.

The Holy Emperor Was Secretly an Absolutely Insatiable Man cover
Japanese flag

The Holy Emperor Was Secretly an Absolutely Insatiable Man
Japanese
Supreme Knight Commander’s Doting Training ~ I’ll Take All of That Oversized Love! cover
Japanese flag

Supreme Knight Commander’s Doting Training ~ I’ll Take All of That Oversized Love!
Japanese