Amagami-san Chi no Enmusubi

Both stories revolve around a guy who is deeply focused on his studies and, due to certain circumstances, ends up living in a temple with girls his age who eventually start falling for him. While the themes are very similar, the way each story unfolds makes them feel somewhat different, especially in terms of the characters. Still, the similarities are quite noticeable. 

Dude moves into location and is surprised by female residents/staff. He is reluctant at first, only to soften his exterior via interactions and begins to care for them. Temple focuses on Ecchi & Absurd comedy rather than drama, characters & intrigue Amagami focuses on the characters & their interactions. There is Ecchi but it is not the focus. 

The basic premise is the same - guy spends time with 3 sisters at a religious institution. There's also this subplot about saving that place. Differences: Temple: A son of a womanizer decides to break the mold and go to a Zen Buddhist temple to achieve nirvana, unaware that 3 beautiful sisters inhabit it, along with 2 foreigners and an abbess. Amagami Sister: A non-believer goes to Kyoto to study, but gets roped in by a Shinto shrine elder, who tells him to marry one of his granddaughters in order to save his shrine. Guy also has some time with his folks at his childhood orphanage and the people involved in the granddaughters' respective lives. Another major difference is that Temple is a lewd and funny "can you get rid of your worldly desires" seinen story while Amagami Sister is a feel-good mythic "do you believe in miracles" type rom-com for the shonen demographic. read more 

Both anime are romcom harem with a studious male MC. The vibes of both shows are similar, so if you enjoy The Quintessential Quintuplets, you'll likely enjoy Tying the Knot with an Amagami Sister as well. Additionally, the creator of Tying the Knot with an Amagami Sister is a former assistant of the creator of The Quintessential Quintuplets, which explains the similar art style! 

The main cast works on both, the chemistry between the protagonists is amazing and the story progresses on a similar pace.