This manga is about 5 chapters long. It involves a researcher with long hair(I believe in a university). His lover has come back from abroad and they reunite in the lab the researcher works in. The researcher is the seme in the relationship and he decides to break up with his lover by stating that he has another lover.

The researcher is an open gay and for that reason he was shunned in his previous working place. He had his works plagiarized but in the end it was cleared up.

Does anybody know what manga this is? Thanks.

Takaramono wa Hako no Naka?

Ohh! Yeah! this is the one! Thanks a lot! Been looking everywhere for it @~@