This is 田中ユタカ/Yutaka Tanaka. His stories tend to be more sentimental than the norm – or perhaps they are normal and the unsympathetic treatment is not. Anyway, they are full of warmth. He is extremely prolific (in fact there is a suggestion several authors use the same pen name, or at least that plenty of assistants are involved). You may also be familiar with the erotic anime adaptation of Virgin Night (初夜), based on his work. He has a slew of normal (non-H) manga published as well, but I am concentrating on the H part of his portfolio here.
