With both parents and Miya away, Junichi wastes no time in inviting Haruka over to enjoy such deviant acts as... playing at being husband and wife in an almost totally innocent way.
Despite Junichi's mind wandering somewhat during these proceedings, even his wildest dreams aren't prepared for Morishima's suggestion that she stay the night - an offer which he snaps up rather quickly, naturally. After being teased mercilessly from footise through to a rather revealing choice of nightwear, it isn't all good news for Tachibana however, as Haruka suddenly hits him with the bombshell that she's leaving for England after her graduation.
Although I entirely approve of this as a Brit myself, Junichi is far less happy at the prospect of losing his beloved, and things aren't helped when Jessica tells Tachibana that she won't let him see or talk to her before her graduation. Wracked with worry, Junichi ultimately decides that there's only one thing for it, leaving him unwittingly playing into the hands of Jessica in fulfilling Haruka's dream.
Aside from being alarmed by the way Haruka and Jessica effectively blackmail Junichi into a marriage proposal (which probably isn't the best way to cement a long and loving relationship - don't try this at home, kids!), this was another episode of Amagami SS which was okay at best, no more and no less. Throwing the solitary moment of drama in at the three-quarter mark of the story arc was a bit of an odd decision which left little time to work with said drama, in turn leaving the pacing of the story as a whole feeling a little off in what was otherwise another fluff piece for fans of Haruka's character in the original series. There's nothing wrong with that I suppose, but it doesn't really have a lot to offer in the long run.