It took a while to finalize this list, since I had to watch at least four episodes for some to be really sure if I wanted to continue or not.  I've dropped some titles that I think are just plain boring, too weird (Manyuu Hikenchou, which is just about... boobs), has no original concept, or I just plain didn't like.
Despite a season of inordinate amount of lolis, it shaped up to be a pretty good viewing list.  I've always gravitated towards shounen anime, but this season served up other genres that I found to be enjoyable. 
So, here is my list of selections from the Japan anime summer season.
Ikkoku Meiro no Croisee
The story takes place in the second half of the 19th century, as  Japanese culture gains popularity in the West. A young Japanese girl,  Yune, accompanies a French traveller, Oscar, on his journey back to  France, and offers to help at the family's ironwork shop in Paris.  Oscar's grandson and shopowner Claude reluctantly accepts to take care of  Yune, and we learn how the two, who have so little in common, get to  understand each other and live together in the Paris of the 1800s. 
Sacred Seven
Arma Tandoji lives a lonely life. One day, Ruri Alba, a girl accompanied  by her butler and maids, visits him. Knowing the power of Sacred Seven  is latent within Arma, she asks him to lend her his powers. However, he  refuses and drives her away since he injured many with his unusual  strength in the past.  Meanwhile, a fiendish Dark Stone creature suddenly appears in this  peaceful town in the Kanto region. Only Arma's power of Sacred Seven can  fight against it. But Arma just lets his power run amuck and things  begin to get worse. Ruri raised her gemstone in order to release his  true abilities. With Ruri's wishes engraved in it, will Arma be able to defeat the Dark Stone?
Kamisama Dolls
Kyouhei, after moving away to Tokyo from his old town to get away from  the events that happened, is on a goukon with his friends, including his  old neighbor, Shiba. After drinking for a whole night, he and Shiba  discover a dead, bloody body in the elevator. He is told by his younger  sister, Utao with her Kamisama Doll, that Aki, an old friend, and his  Doll are the culprits responsible.  
Usagi Drop
Going home for his grandfather's funeral, thirty-year-old bachelor  Daikichi is floored to discover that the old man had an illegitimate  child with a younger lover. The rest of his family is equally shocked  and embarrassed by this surprise development, and not one of them wants  anything to do with the silent little girl, Rin. In a fit of angry  spontaneity, Daikichi decides to take her in himself. But will living  with this overgrown teenager of a man help Rin come out of her shell? 
Uta no Prince Sama
With dreams of becoming a composer and someday writing a song for her  favorite idol, Haruka enters the Saotome Academy, a prestigious  performing arts school. If successful there, she’ll be able to join the  Shining Agency after graduation. However, it won’t be so easy when  Haruka is already surrounded by potential idols and composers. On top of  that, her homeroom teacher is a current idol, the headmaster was a  record-breaking singer, and the academy itself is a chaotic place where  anything can happen. Which prince of song will be paired up with  Haruka? 
Mayo Chiki
Konoe Subaru, 17, has been serving as the butler of Suzutsuki Kanade in  school, a classmate of Sakamachi Kinjirou. Due to an accident, Sakamachi  discovers Subaru's secret... that he's actually a girl. Apparently, she  will be removed from her position if anyone at school finds out. What  will unfold from this chain of events? 
No. 6 
The story takes place in the ideal city "NO.6" in 2013. Shion was judged  as having "highest-ranked intelligence" when he was two years old and  was allowed to live in the luxurious area of "Cronos". On his twelfth birthday, he met a beautiful boy called "Nezumi," who had  escaped from a reformatory. Shion protected him, but the Public  Security Bureau deprived Shion of all his privileges and expelled him  from Cronos to "Lost Town".  Four years after the banishment, a mysterious accident leads Shion to the secret of the city NO.6. 
Mawaru Penguindrum
Three siblings, twins Kanba and Shouma, and the  in-and-out-of-the-hospital Himari who's in poor health, live together at  the Takakura home. One day, when the siblings are out on a trip to the  aquarium, Himari collapses. The doctors state that nothing can be done  for her anymore, but then, a miracle occurs... 
The iDOLM@STER
Based on the XBOX 360 game The iDOLM@STER 2, The iDOLM@STER follows 13 aspiring idols aiming to reach their goals. 
R-15
Akutagawa Takuto is a teenage porn novel writer. He enters Hirameki  Gakuen, which accepts only geniuses with outstanding talent. He leads  his classmates with his porn skills to win the interclass competition. 
Kamisama no Memo-chou
Narumi Fujishima is a plain high school boy, who has been isolated in  the class. His classmate, Ayaka Shinozaki, invites Narumi to the  gardening club and introduces a hikikomori detective named Alice to him. Though unwilling, Narumi ends up as one of Alice's assistants, helping her solve mysteries.
Nyanpire 
A heartwarming story about a stray black cat, who was given blood from a  vampire. He was taken in by a girl Misaki and started live with her.  Nyanpire's favorite phrase is "Give me blood nya.. 
You can also check out my anime list of ongoing series that premiered last winter and spring in Japan.
All summaries and images from My Anime List, except for Ikoku Meiro no Croisee, which was from Anime News Network.   
Happy viewing!!Labels: Anime, Must-Watch, Summer, TV