When Arisa loses her memories from the past three years, her girlfriend, Mari, worries it might mean the end of their budding relationship. A needless concern, it turns out, because when Arisa lays eyes on her, she falls in love all over again! Arisa’s not about to let a little severe brain damage get her down, because she has a chance to relive all their firsts for a second time―from dates, to kisses, and even beyond…!!

Arisa might have lost her memories of the past few years, but she’s not about to let that get her down. When her girlfriend Mari invites her on a trip, it’s the perfect chance for the two to put their feelings about their complicated relationship into words…but Arisa will have to start working again first if they want to pay for it!

Arisa and Mari have finally decided to get married! The two are in a better position than ever to prepare for the ceremony now that they may know the cause of Arisa’s amnesia, except...Mari still hasn’t told her family about their relationship. And so, amidst all the wedding planning, Mari and Arisa go to greet Mari’s parents and announce their intentions—but will the pair be able to get through to them?

記憶喪失によりここ数年の記憶がなくなってしまうがそんな悩みより恋人との新鮮な生活に興奮の毎日を送っていた。そしてついに、アリサとマリさんは結婚することになるのだが結婚式当日、アリサはとあるきっかけで記憶を思い出す――。記憶を失う前のふたりの物語が明かされるひたすら明るい記憶喪失百合コメディ、過去編！

アリサとマリの結婚後のいちゃらぶを描く、ひたすら明るい記憶喪失百合ラブコメ完結巻！