YU-NO was originally a 1996 visual novel, and was the grandfather of modern time-travel anime and visual novels. Steins Gate in particular was greatly influenced by YU-NO.
Both involve time-travel and parallel-universes, and give scientific explanations behind it, and involve the protagonist attempting to save someone.
Both anime are based on amazing time travel visual novels where the main characters obtain the power to travel back in time to save their friends from a cruel fate. Both anime use a time travel mechanism based on parallel worlds which makes sure no time paradoxes occur. Time travel in SG is based more on science, while YUNO has more mystery. In SG the main characters are all teens, while YUNO has more women of which some also are teachers.
Pretty similar stories/settings. Both male MCs have a device that can be used to travel through time or through parallel worlds/timelines. Also, they are both trying to save/help those precious to them.
The animes are similar in the way that both mc's have the ability to go back in time multiple times to achieve a favorable outcome. Re: Zero has its lead reverting back to a checkpoint in his life when he dies, while the lead in Kono Yo No Hate has an ancient device that allows him to save a checkpoint in time and travel back to it if he chooses to.
The same scenario, where guys finds himself in alternate world, and also experiences, some time like a rewind in time , however in YuNo the guy goes into an alternate world where is still has similarities from his home world but with some slight difference
Both have nonsense science derived from real theories. Really Good Character Writing And Dialogues. Even tho we do not have Mai Sakurajima In YUNO, the protagonist is very much like Sakuta. A Rascal. Bunny Girl's Better But Give YUNO a shot as well.
Both are based on highly rated visual novels where the protagonist suddenly gets dragged in many mysteries while surrounded by beautiful women. Furthermore these anime are very similar because of time travel (explaining more would be spoilers)
Another 2-cour science-fiction/mystery show with high school characters. Both main characters have time travel ability. In YU-NO the MacGuffin of the story is the time travel device the protagonist uses, but in Sakurada reset the MacGuffin is the key to all the superpowers.