Shouma Toriashi is an old friend of Yoshino's and his adopted relative. Currently he's a university student.
~!He was abandoned by his biological father in middle school, and became an orphan. He was then adopted by Yoshino's grandfather Somei Renji.!~

Somei Renji is Somei Yoshino’s grandfather and leader of the “Somei Group”, the Kansai region’s biggest yakuza group. When he arranges for her to be married to Miyama Kirishima, Yoshino has to move to “Miyama Clan” estate, the Kanto region’s biggest yakuza group. Kirishima warmly welcomes Yoshino and is such a pleasant, personable, and nice young man that nobody would suspect that he comes from a yakuza family. This puts Yoshino at ease even though she was initially feeling insecure in this unfamiliar place. 
 
But then, a certain event leads to Yoshino witnessing the real Kirishima.
 
(Source: Crunchyroll)

He was married to voice actor [Kanako Mitsuhashi](https://anilist.co/staff/95546/Kanako-Mitsuhashi) but they divorced on June 2012. 

Non-anime roles:
-Baizhu (Genshin Impact)
-Roland (Punishing: Gray Raven)

Yoshino grew up as the yakuza princess of the Osaka Somei crime family. Everyone left her alone due to her sharp gaze and mobster ties. But when her grandfather signs a truce with the Tokyo-based Miyama crime family, she’s offered for betrothal to the Miyama leader’s grandson, Kirishima. At first, Kirishima seems amiable and polite–but when he shows his dark side, he proves to be more disturbing than any gangster Yoshino has ever met. This engagement is sure to be a wild ride for a tough yakuza princess and her twisted yakuza prince!
 
(Source: Seven Seas Entertainment)
 
Note: 
- Winner of the 4th Next Manga Award in the Print Manga Category in 2018. 
- Nominated for the 46th Kodansha Manga Award in the General Category in 2022.