Volume 1: Kizuato ni Kuchidzuke

Seiichi Kurusu is the handsome eldest son in line to inherit a large company. After running into insecure dentist Nao Seto not once but twice coincidentally, Seiichi wonders if fate is at play.
When Nao reveals that Seiichi actually reminds him of the man he's been unrequitedly in love with, Seiichi proposes a deal with him: for the length of time he receives his dental treatment from Nao, the two of them will date.
Nao's tragic love history, combined with Seiichi's status as family heir and the impending countdown... can something good come from such a relationship?

Volume 2: Kizuato ni Kuchidzuke Sweet Time

Seiichi Kurusu and Nao Seto are officially dating and living together. Even though they share a home now, their busy jobs have made it difficult for them to spend time together.
When Seiichi reveals that his father has been trying to set him up with marriage interviews, Nao realizes that he doesn't want to let Seiichi go. With Seiichi's position as the eldest son set to inherit his father's company, will they be able stay together forever?

Official English Release:
TokyoPop, INKR