His stories are packed with heartwarming. As the entry under Virgin Night says, this is erotica that wears its heart on its sleeve.
For Tanaka-san himself, the afterword he wrote for My Lovely Ghost Kana. The story had incubated in his head for a long time, but didn't feel he could do it justice at the time he originally thought of it. He describes how long he worked as a mangaka before he felt he had developed the skill to bring the work to fruition the way he felt it deserved. It's humbling, heartwarming and inspiring, just like his manga.
Sweet Dreams Fuel: By the end of one of his stories, you are likely to want to run off and find someone to hug.