I'm not entirely sure which specific 'Suga my first love story' you are referring to. It could be a personal account by someone named Suga about their first love. Without more context, it's difficult to say much more.
If 'Suga' is a name of a person, perhaps 'my first love story' is about their initial experience with love. It might involve the feelings of infatuation, the first meetings, and all those sweet and sometimes bittersweet memories that come with first love. For example, it could include how they met their first love, what attracted them, and how that relationship evolved over time.
The 'suga my first love story' could be a really touching and personal narrative. Maybe Suga is sharing how they overcame shyness to approach their first love, or how that first love influenced their growth as a person. It could also be about the heartbreak if the relationship didn't work out, and how they learned from that experience to become who they are today in matters of love.