Close the Last Door! Vol. 1 (v. 1)

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