From DMP:
Hikaru, a second year high school student, is obsessed with Shima, a male teacher. Surprisingly, Shima is not averse to the boy's affections. He even convinces Hikaru to study hard so that when he graduates, they would openly become lovers. However, Amamiya, an ex-lover of Shima, steps into the picture and tries to win him back.
Will Hikaru and Shima's passion prove great enough to hurdle all the obstacles stacked against them?

Set in Japan during the '20s, Mitsuyaku is the story of two childhood friends from very different walks of life who grow up to become lovers. Yuuichi is an ambitious type from humble beginnings, working his way towards success. His beloved Iori is the scion of an important family -- a beautiful, dark-haired creature with a gentle nature.

Unfortunately, one of the aspects of belonging to an important lineage is marriage. Will the hero have the guts to stay with the love of his life, or will he succumb to his family's pressure to shore up the dwindling finances by marrying rich?

Prequel to Takumi-kun Series

From Forever More:
Shidou highschool Institute is an all-boys dormitory school located far from the city inside the mountains. Takumi, who is going out with the famous Gii - Saki Giichi in the academy, has a secret which no one knows...

Series goes on like that:
1. June Pride - licensed by Blu (September 2007)
2. Barefoot Waltz - licensed by Blu (December 2007)
3. Tales out of Season - licensed by Blu (March 2008)
4. Bibou no Detail
5. Jealousy
6. Hanachiru Yoru ni Kimi wo Omoeba
7. Pure
8. Pure 2

June Pride:
Far away from the city, deep within the mountains, sits the all-boys high school, Shidou Academy. In years past, this school housed only the sons of the most elite families in the country, but these days it welcomes all into its historic halls. Takumi, a boy from humble origins, prepares to begin his second year at the school. Held back by psychological issues, Takumi's indifferent attitude has garnered him no friends and the reputation as a cold fish. Then along comes Gui, a wealthy and charismatic student born in America. Gui is the only person who doesn't see Takumi as odd, and the two become friends. But how will the two cope when Gui confesses his love to Takumi? And can the couple survive the revelation of the secret behind the psychological problems that plague Takumi?

Barefoot Waltz:
17 year-old violin prodigy, Sachi, has scheduled a performance at Shidou Academy that has all the student body abuzz. This is especially true for Takumi who gave up the violin, but has nevertheless been an ardent admirer of Sachi for years. When the two become friends, how will it affect Takumi's relationship with Gui? And what is the true reason behind Sachi's visit to Shidou Academy?

Tales out of Season:
When Takumi and Gui hear an odd sound in the science lab late one night, they discover a photograph that leads them to a mystery involving the school clock tower. Is the school haunted by a vengeful ghost? Or is someone hiding a dark secret? And when the couple spends their first Christmas together, will Gui play the role of Santa and fulfill all of Takumi's desires?

Tsukishita is completely dependent on his little brother. It's the first day of school, and his little brother has already had to find Tsukishita with the things he's forgotten. When a group of girls try to help him find his older brother, they mistakenly think he's Kagami's younger brother. When Kagami realizes who he is, he also remembers the day he confessed to Tsukishita. Tsukishita offhandedly said some heartless things to Kagami; did he really mean them the way they sounded?