Achira Kochira Bokura (no, Are kara to Kore kara)

Majima and Sonoki have gone a long, long way from being just classmates from different cliques with a budding, bumbling friendship. Now living separate lives at distant universities, they haven't talked since graduating high school - but for some reason, they can't help but think that something very important is missing. Taking matters into his own hands, Sonoki pours his emotions into a letter he swears will never get read - but what happens when Majima actually gets his hands on it?