When hanging out in a gay bar, Koushi Yanagi a university student, meets a very sexy office worker, whom after getting drunk accepts his advances. But when the office worker becomes sober, suddenly he loses his nerve, starts acting violently and runs away. Koushi disgusted and angry accepts an invitation from Takashi Kirishima, aka Ten, his sex friend.
At Ten's house Koushi meets the office worker again. He is Ten's twin brother, Arata Kirishima, a researcher in a laboratory. Later Koushi visits Arata's room when Arata is home alone. Arata denies the incident and tries to give money to Koushi asking him to leave, but Koushi offended, goes wild with anger and rapes Arata. Arata asks Koushi to keep what happened from his brother but it makes Koushi angry all the more. Blackmailing Arata with the promise of telling Ten everything, Koushi makes Arata his sexual slave, but gradually they become attracted to each other.

Honey Senior, Darling Junior is an endearing collection of four short stories about the inevitability of love.

School is ending and two friends Hikaru and Tsuyoshi decide to go on a road trip together to make one last, good memory.

Chikato and Yo-o are fellow track runners with great potential. However, when Yo-o suffers a permanent leg injury, Chikato sticks by his friend through the good times and bad.

Niwa is considered the school weirdo. Only one fellow student Sako shows any compassion and understanding.

Finally, Ushio lives out lonely days in his hometown waiting for his cousin Kei to return home on university holidays.

What do all these couples have in common? Through all their laughter and tragedies, they discover a deep bond with each other they never knew existed...a bond that will last forever. Love is everywhere, but more importantly love is inevitable.

Cute oneshot about a little boy who decides to wake up his older friend who lies in bed with a flu, and discovers that their bodies aren't the same.