Close the Last Door, Volume 1 (Yaoi)

What would you do if your crush of umpteen years suddenly got married? After attending his beloved Saitoh's wedding, broken-hearted Nagai gets a little too drunk, landing himself in a hotel room with the bride's guest, Honda. To top things off, just when he thought he was getting over Saitoh, he finds out that newly-wed Saitoh's bride has run away.