Both are seasons of Super Sentai that have a heavy focus on being the anniversary of the franchise. Both seasons have a focus on Super Sentai being part of the bigger world/multiverse. Rangers can use the power of the previous seasons but having the gimmick corresponding to that season.

Both comedies revolve around a couple who end in a Marriage Of Convenience. The male leads end up falling for the female lead by the end from their interactions with her. The ending is different enough, however, so be ready.

Both have a female lead that is trying to make the male lead, who happens to work in the same place, fall in love with her. Both male leads are stand-offish, to varying degrees. In the workplace, there are other males colleagues who are interested in the female lead as well. In the end, both couples have similar results.

The second part two the "The boy and girl end up sharing an apartment and nobody must find about that" story

A close friend/relative of the male lead is part of the story and starts to fall for the female lead. The male leads fight for the love of the female lead.

The boy and girl end up sharing an apartment and nobody must find about that.

The male leads fight for the love of the female lead.

Both are comedies

The female lead starts off by being dumped by her cheating boyfriend.

The female lead is forced to live with strangers due to circumstances.

The female lead is unlucky/unpopular with guys before living with roommate(s).

Both are comedies

The female lead is forced to live with a male stranger(s) due to circumstances that create the potential of romance to flourish between the female lead and male roommate protagonist(s).

Leads have to learn to live together.

The Female lead has met the roommate(s) prior to living with them.

The female lead is unlucky/unpopular with guys before living with roommate(s).

Both teams have a rescue brigade motif

Both are toku series that are composed of a team of 5. members. They are part of a franchise that tends to have a 6 member but neither season did that.

Both are older sentai teams (pre-2000) that focuses on a team that is made up of siblings.

Both have the rangers be away for their parents for the most part

Both shows are a battle royal of toku heroes that are fighting to win a wish/power

The main characters are both naive and friendly

Suits are flash and colorful

More than 3 toku heroes battle with and among themselves

The main characters are both naive and friendly

The main characters motif are both dragons

Both shows have about 10 riders. These riders fight each other and also work together, depending on the situation.

Both shows have a dimension besides the one where the riders live in

The riders of Saber are swordsmen/knights. The rider suits of Ryuki all have motifs of warriors, which include knights and many others.

Main rider of Saber has a dragon motif and many other riders have animal motifs as well. Main rider of Ryuki has a dragon motif and all the other riders have animal motifs. Both shows have a dark dragon motifed villain that fights the main rider.