The Character

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Seiichirou Hayami
Seiichirou Hayami - Profile

General Information
Kanji Name 速水誠一郎
Romaji Name Hayami Seiichirō
Game Debut My Wedding and 7 Rings
Blood Type AB
Favorite Food Chocolate
Hobby Tropical Fish
Talent Research
Birthday January 11

Seiichirou Hayami is a selectable character from the My Wedding and 7 Rings. He was the late CEO's right-hand man and currently the acting CEO until you are married. 


Seiichirou didn't have an ideal childhood for his father was an alcoholic and couldn't hold down a job, while his mother did ever she could to care for him. His mother didn't want him to end up like his father so she urged him to work hard at a good job, and Seiichirou kept that promise.

He worked hard through school and college; when he was in college, he met and befriended Hiroto Chitose. He continued to work hard when he worked at Sanno Corp. He and another man were applying to be the CEO's right hand man; Seiichirou thought the other man would be chosen because of his connections, but the CEO chosen him instead because he was a hard worker. Since then, he always admired the CEO's kindness. 

He would learn about the CEO's family after the death of his daughter and her husband, and about you. The CEO asked him to watch over you and even select presents for your birthday on his behalf. This continued on for 10 years until the CEO became terminally ill. Seiichirou vows to carry out the CEO's last will by ensuring that you find happiness with your fiancé and continue the company.



Seiichirou has black hair that's parted on the right with bangs, rimless glasses over his dark green eyes, and a pale ivory skin tone.


  • Business Attire: He wears black business suit, a white dress shirt, and a red tie adorned with a square pattern.
  • Casual Attire: He wears a lilac striped, dress shirt, a dark blue blazer, and gray slacks.  


Seiichirou is described as emotionless and is often referred to as a cyborg.

Summary of Routes

Main Story

Coming Soon...


Coming Soon...


Coming Soon...

Sequel Epilogue

Coming Soon...


  • He has the same birthday as Eisuke Ichinomiya.
  • Hiroto calls him Sei.
  • He can speak Italian.
  • He has very low alcohol tolerance; he can instantly get drunk by drinking too fast or consuming a shot of strong alcohol like bourbon.
  • Although not confirmed, Seiichirou is most likely in his early or mid thirties, since he's been in Sanno Corp and watching over you for 10 years.
  • He suffers from Achluophobia.
  • Seiichirou likes to collect tropical fish
Seiichirou Hayami