From Obsession:
Long ago, his mother had killed his father and had hurt him also; that may be the reason why Izumi Takuto, a soccer player in school, acts so "cold" to other people. He didn't want to trust anyone, or give his love to others, so he went to live on his own when he was adopted by another family. One may think that by now he would forget about the murdering incident in his life, but when he encountered someone in the street one dull rainy day....everything changed. The drunk happened to be the famous idol popstar named Koji Nanjo. Ever since their encounter in the street (or rather at Izumi's house), Koji had taken an interest in Izumi...his interest later became deeper than that... A feeling that may be known as "desperate love".

Special volume of 4 short stories, mostly about Kouji Nanjou's youth: 1) Kouji Nanjou Version 2) Bad Drug 3) Bad Blood 4) Zodiac

The sequel/continuation of Zetsuai -1989-.

Koji and Izumi are still playing one step forward, two steps back in their anst-ridden dance of love. The drama is taken to new heights in this series. How far will Koji go in his obsessive love for Izumi? Will these two ever be together and be happy at the same time? If you like drama (in other people's lives) and want to feel much, much better about your troublesome relationships, read on!