 If you liked
Silver Diamond
|
 ...then you might like
Hengoku no Calendula
|
Both have beautiful boys relationships in a well thought out fantasy world setting.
While Silver Diamond is not strictly BL and focuses more on the deep story, Hengoku no Calendula explores the romance of the two main characters, while still creating a great story and battle scenes with monsters.
The dynamic of the two proagonists is similar, with a pure and gentle one paired with a mysterious stranger, that has trouble remembering his past.