When his grandfather dies unexpectedly, high school student Yukiharu finds himself orphaned and alone. Surprises are in store, however, with the reveal of a long-held secret: Yukiharu actually has six brothers! Reunited with the Hiraga clan, Yukiharu is shocked to discover that they’ve been living in a manner he’s not accustomed to at all – in a run-down house, with no adult supervision, and in complete and total poverty. Changes to Yukiharu’s lifestyle and social standing could prove too much to endure when he makes the decision to move in with his only remaining family. Can the brothers he’s never known come to accept him? Or will Yukiharu find that blood is the only thing they’ll ever have in common? Complicating matters further is the unwanted attention of next-door neighbor, Makoto. Who is this guy, and why does he fawn over Yukiharu?! Is there something in the forgotten past that’s the cause of Makoto’s disturbing behavior?
(Source: Juné Manga)

Bizarre club for UFOers kidnaps new student to be a member.
Included one-shots: Kimi no Tonari ni, Respective Feelings

Spin-off of "Koufuku no Susume" : the romance between Mizumo and Minori. Mizumo Hiraga is providing sex for money to bring up his brothers. The Otunari family have always been tender for the Hiraga's, like parents. Minori Otunari finds out Mizumo's dirty business and offers to pay in order to have sex with Mizumo. Their distorted physical relationship starts in this way, but Minori begins to love Mizumo seriously...

A collection of stories:

From Lililicious:

1. Cosmos no Saku Niwa (The Cosmos Garden)

2. Goshujin-sama to Issho (Together with Master)
A "PET" is a love animal, created for the express purpose of pleasing their master. This is a short story of how one PET became endeared to her master, and vice versa.

3. Kuchinashi (Gardenia)

4. Sakura Buntsuu (The Cherry Tree Correspondence)
A sweet story set in the Taisho period.

5. Hare ni Mau Yuki (Snowflakes Fluttering Down Through the Clear Sky)
A love story about a princess and a knight.

6. Hoshi ni Negai o (Wishing on a Star)
Two friends deal with grief.

7. Sakura Buntsuu - After Story (The Cherry Tree Correspondence - After Story)
Another pair of girls begins exchanging letters.