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.
One of his most recent, and perhaps best, works is 愛しのかな/Itoshi No Kana, a heart warming and light hearted tale of a man’s relationship with a ghost, Kana. Recommended.
Personally, I think the art to be most accomplished, expressive and full of warmth.
Availability of his works in English is not good – they are not difficult to understand, and the art speaks for itself, so hopefully this is not too much of an impediment to enjoying the works of a prolific and accomplished mangaka. You might try looking for scanlations, as he is popular enough in Japan. Another mangaka with a very similar style (thought to be an assistant) is ハマダユタカ/Yutaka Hamada (now H-Magic), although the content of his works seems to have radically diverged.
| 
Top 20 Hunkiest Pokemon
Wagamama High Spec Hot Indeed
Mayoiga Full of Mystery
The Empire of Corpses Gorily Grim
One Piece: Burning Blood Total Bikini Madness
Bakuon!! Wild & Rough
Milky Mimi Ero-Figure Deliciously Creamy
Dead or Alive Ero-SFM Doubly Dirty
Flying Witch “Cute But Boring…”
Phantasy Star Online 2 Phantastic: “What About the West!?”
Shounen Maid “A Fujoshi Delight”
Terra Formars Live Action Web Drama Announced
Dragon Quest Heroes II Quite Monstrous
KumaMiko Lovingly Innocent
Aqua Onahole Parody Hopefully Moist
A-Size Classmate Profusely Petite
One Day With Maria Raunchy & Romantic
The Reject Demon: Toko Chapter 0 Raises Its Voice
Hai-Furi in Troubled Waters
Kasumigaoka Utaha Cosplay Pretty Pure
Goddess of 2ch “Another Bathing Beauty!”
Tantalizing Hestia Cosplay Busts Out
Kashiwazaki Sena Cosplay Pure & Innocent
Minami Kotori Casino Girl Cosplay Takes No Chances
Shimakaze Cosplay by Ema Sakura
Harley Quinn Cosplay by Miyuko Colorfully Crazy
Sonico Ero-Cosplay by Yuka Hoshikage Super Sexy
Kasugano Sora Bunny Girl Cosplay Absolutely Admirable
Goddess of 2ch: “Barely Legal Beauty!”
I've read My Ghost Kana!!! I thought I recognised the art style from the top pics lol.
Did this artist do one about a boy who was dying and had a robot/girlfriend made to live with him during his dying days?
And I totally agree. The art is full of warmth.
Indeed he did, you're thinking about Ai-Ren.
yes, that's true - ai-ren ( i think that's his best series >__< he's my very favourite manga author.
I wish there were more Hentai mangas like these.
I love a good mix of sex and romance. Somewhat like 70-80% romance and the rest sex is perfect for me.
Where can I find those scanlations?
I'm specially interested in Shiawase Ecchi...