I'm thinking it'll end pretty soon, since it a high-school based manga.
Cut off the sports and high school is ending, i'm leaning towards a quick marriage and then showing them adapting and finding work while suzuka tries to finish school as a pregnant student. Then i'm thinking a jump to a happy ending as they show the child being born and then THE END.
PS. i helped with the tls for 159, plez pm comments since i havent done tls for years and i'm sure its a bit rusty.