Tonari No Kare
Complete | Kinoshita Keiko | 2007 released
Kinda abrupt ending.. MC is a student and moves in a appartment complex. Fall in love with his neighbour (who lives with his niece). Seme feels responsible for the death of his sis and sis'shusband (he's in love with him). Well ... MC asks seme to fall in love with him and when seme know he's in love with him, he kanda play with his feelings.... Not really sure he loves him at the end....
Family Simulation!!