Well...it's the final volume.
Volume 5 moves from Akko and Mari (finally!) acknowledging each other's feelings to their going out as a couple. Mayu, a close friend of Mari's from when they were in elementary school (Mari was the only person who befriended Mayu when she was being bullied, you may remember), runs into Mari and Akko while they're out shopping on a Christmas Eve date. Mari and Mayu start meeting and mailing each other a lot, which makes Akko uneasy.
Seeing Mari and Mayu spending time together, Akko thinks about what makes her different from Mari's other close friends. She really wants to sleep with Mari, but she's intimidated by the (false) idea that Mari already has experience. (Looking up porn for sex ed doesn't help.) Akko learns that Mari was just giving Mayu make-up and fashion tips to help her get the attention of the boy she likes. When Mari asks Akko to help Mayu with her make-up, Akko begins to realize what she would enjoy doing for a career.
Soon everyone is planning what to do after graduation, and Akko decides to attend a vocational school to become a make-up artist. This upsets Mari, who thought that she and Akko would attend the same college. Of course they make up, and Mari decides what she wants to do. Everyone graduates, and Mari and Akko are still together in college/vocational school.
Well...it's over. (I'm starting to sound like a broken record. XD) This volume has a hard-won happily-ever-after, a cute Christmas Eve date, beautiful art, and strong writing. Morinaga balances romantic escapism and realism with the same cheerful, lighthearted touch that has endeared her storytelling to fans since her Yuri Shimai/Yuri Hime days. This volume isn't 100% perfect (which Morinaga herself feels, in a different way, in her afterword- although I think she's too hard on herself about the ending; my nitpick is that I would have liked to see Mari and Akko come out to someone, and seeing them together
Overall: Strong A-
A note: I started taking photos of the manga I review because I couldn't find a decent-sized picture of the edition of Cutey Honey I have. I've continued to do it as a subtle way to encourage people who read manga via scanlations or raw scans to support the people whose work they enjoy. (I don't know if there's any point in doing that for something that's well out of print and out of stock, though.)