Manly Bottoms

Two semes fight over being the top. Positions-trading.

Mangaka x editor
The kouhai in high school whose drawing he adored now worked as a convenient store staff. And he, now an editor albeit an unenthusiastic one, pushed his kouhai to work on his dream of being a mangaka once more.

Chapter 4-5. It has a prequel in yume no you.

The third story is the sequel of the third pairing in 1-en no otoko. Kyouichi is now the head of the gang, but his ex-caretaker, now his lover, hadnt had sex with him for 2 months. Reverse sex role. Manly bottom. Yakuza.

Master x dog kind of relationship. Mention of reversible role. Getting picked up by an adorable younger guy in a bar, he realized his newfound preference in being the younger guy's dog.

Older, but shorter man x university student.
A poor university student, who, despite his good looks, was a virgin, was kicked out of his apartment when his friend accused him of cheating with his girlfriend. Then he met the old-bookstore keeper who offered him a room in his apartment. But the old man turned out to be the heir of a rich family!