There is a narrative structure specific to shonen that's different from seinen, which is also different from shoujo, etc. It's really not a big deal.
Also, I watched Angel Blade Punish! - the sequel to Angel Blade, a hentai OVA. It was great, but it ended on a cliffhanger and there's never been a third part as of yet maid... and likely never will be. :'-(
I want more sentai babes fighting mutant freaks.
Also, I saw Kite: Liberator, the sequel to A Kite. It's very unfortunate how lackluster it is. And it's not even a true sequel. And it didn't resolve all of its plot threads that needlessly kept piling up over the 50-minute run. Bizarre...
Also, I saw New Dream Hunter REM, the sequel to Dream Hunter REM. Both OVAs were great, especially the last one, a retelling of Frankenstein.