Fire Emblem

both are action fantasy themed stories that deal in war and the shit that comes with it as well too. 

Anime adaptations of Nintendo classics. 

Both are based on notable JRPG games and both were featured on Nintendo consoles. 

Both series are based around famous video game series and also share similar themes of warfare as well. 

Both of these have the same plot outline. A well-liked and honorable kingdom falls, the king is taken out of commission, and the prince is driven out of his kingdom with only one or two key supporters. The prince goes on a journey to reclaim his kingdom and ends up finding allies along his way due to his strong likeable character and personality. 

Both anime have a similar fantasy world as their setting. They both have a cast of interesting and good looking characters. The protagonists are also similar because they are both young and have royal blood in them and they have many likable companions and friends who help them overcome the difficulties of their respective journeys.  

Both OVAs are based on old Videogames. They are short and if you want to watch of what the 90s anime was. Although watch them in japanese, because english 90s dub doesn't help these short animations.