Totsuidekita Yome ga Aisouwarai bakari Shiteru (2020)

Blurb:
They’ve been married one month already, but Soijiro’s new wife Chiyo has maintained a fake smile every day since. She says and gives away so little, in fact, the insecure samurai can’t help but worry whether she’s dissatisfied with the arranged match. Ever the beautiful and dutiful wife, Chiyo seems much too good for him – a lowly second son – so he swears to become the husband she deserves. Little does he know, however, the head-over-heels Chiyo is desperately trying to keep her wild attraction to him in check for propriety’s sake.

How could she not love a handsome husband who cherishes and protects her with all his heart?

Source: www.anisearch.com/manga/60541