Yes, Stiens Gate is damn good. For sure in my top 5 animes. After episode 8 or 9 your mind will be blown. Every episode after that is a mind
. I love it. In fact I thank this thread for recommending it. Also it harem anime done right.
It depends on when you watched it. The anime has been around since the 80's. The manga came out the year I was born (1981). good year. I went to the Manga Museum in Kyoto a year ago. They had huge columns reaching to the celling, kinda like when you see those elaborate libraries in movies. A column for for each year. I checked out my year and Captain Tsubasa seemed to be the most important one. I look at it as my "Manga/Anime" Zodiac sign.