Luke and Jan Valentine's Merry Manga (ルークとヤンのあとがきまんが,,Rūku to Yan no atogaki manga) is an omake of the Hellsing manga, not appearing until Volume 2 of the manga.
It's a very short, fun afterword which stars the Valentine brothers, Luke and Jan. Appearing at the end of the volumes, every volume has Luke and Jan talking about different stuff. It's also not in-universe, meaning that Luke and Jan are basically self-inserts. They talk about things like Gundam characters, making fun of the pacing of Hirano himself, etc. Essentially, it's just Hirano having fun; as the drawings are messy.
They are also Kouta Hirano's favorite characters, which would make sense as to why he would make an omake manga specifically for them.
Chapters
Volume 2
Luke's and Jan's Life's A Paper Balloon Beautiful People Corner
Luke and Jan talk about a variety of things; like how Luke was eaten by a doggy, for example. In the end, Luke makes a Gundam reference, stating things like if you stretch out the Japanese word for "Volume 2", it sounds kind of like "Hamaaaan." Just like the Gundam character.
Luke's and Jan's Paper Snow Storm of Humanity God is in the TV Corner
Luke and Jan talk about a variety of things; like how it's been a whole year since Volume 2 was released. That accursed mangaka is so slow. Luke then pokes Jan's eyes for no reason at all, but his finger was broken. Jan then makes a Saint Saiya reference.
Guest Appearances
Riki Takeuchi
Show Aikawa
Volume 4
Luke's and Jan's Paperwork Humanity Hate the Hater Corner
Luke and Jan talk about a variety of things; like how Luke just got back. It was confirmed, that guy who knocked on Jan's door really is his big brother. As this was the 4th volume, that meant that the manga was plunging into its fourth year.
Guest Appearances
Ikariya (mentioned)
Volume 5
Jan's and Luke's Paper War Humanity God Eat God Corner
Jan and Luke talk about a variety of things; like how it took a long time for Hirano to release another volume because he was drawing a side story or something.
Guest Appearances
RX-78-2 Gundam
Volume 6
Luke's and Jan's Paper Phallus Humanity Coma Black Corner
Luke and Jan talk about a variety of things; like how, for some reason, Jan became an admiral. When this was released, it marked 2 volumes within one year. It is then joked that if you were to read "volume 6" in Japanese as "rokan," it would sound kind of like that Jojo character.
Guest Appearances
Rohan Kishibe
Yoshihiro
Yoshikage Kira (mentioned)
Kira Yamato
Volume 7
Luke's and Jan's Paper Phallus Humanity Mobscene Corner
Luke and Jan announce the results for the Hellsing popularity contest.
Results for the Hellsing Popularity Contest
1. Luke Valentine
2. Vash the Stampede
3. Alucard
4. The Gundam (RX-78-2 Gundam)
5. Lamborghini Countach
6. Hamburger Steak
7. Boobs
.
.
.
375. Jan Valentine
Volume 8
Luke's and Jan's Humanity Paper Light Beam Lest We Forget Corner
Luke and Jan talk about a variety of things; like how it's summer and Jan's in his undies. It had been more than a year and a half since the previous volume.
Guest Appearances
Lum the Invader Girl
Volume 9
Luke's and Jan's Humanity Paper Self-sacrificing Devotion Coma Black & White Corner
Luke and Jan talk about a variety of things; like how Luke was resurrected, making a fabulous reappearance by drinking some random sugar water given to him by a background character. A background character goes up in flames, as the wind was very strong. Luke also made a Baki joke.
Guest Appearances
Koushou Shinogi
Kureha Shinogi
Volume 10
Luke's and Jan's Farewell
After ten years of serielization, in honor of Hellsing coming to an end, Luke gives a top-ten list of the manga's biggest news.
Guest Appearances
Umezaki
Maya
Takami
Trivia
Volume 5 is the only time that Luke and Jan's names are switched around in the title of the Merry Manga.
In the afterword of Volume 3 of Hirano's next manga after Hellsing, Drifters, Jan and Luke appears. They're also the main characters of the specific afterword, and the afterword is titled "Luke n Jan's Arma-Goddamn Corner."
In an issue of Drifters, a short collaboration between the two manga's happened; with Easy interacting with Alucard's Young Girl form, and Luke and Jan Valentine appearing.
Jan and Luke appear in the end of the Hellsing the Dawn tankōbon in a short comic.
