This is episode 20 of 57 of Be Mine, My Hobo Valentine. Play it below, then continue straight into the next episode — the whole season is free and needs no account.
The middle of the season, where the conflict escalates.
After her mother's death, Saya suffers abuse from her father and his new family. To protect her grandfather's estate, she must enter a marriage and produce an heir. So she marries a "homeless" who's secretly the wealthiest heir. Under his protection, she defeats her enemies, and they fall in love.