Ah. So, Kumiko and Reina had a thing I take it? Well, they can raise/sell/eatabort the baby together, I suppose, if it really was love.
It's more complicated than that. Basically, in the anime Kumiko and Reina have really huge subtext together but Reina has a crush on the music teacher Taki-sensei.
The Love Triangles emerge. I suppose nothing can end without someone getting hurt. The baby would have a weird upbringing with three parents, if it were to proceed via the status quo.
It's Eupho-kun!I got knocked up on first try♥Reina, Reina, look here!Oh no!Delusions running wildIt's Sensei's Eupho-kun♥Reina, Reina, look here!I got it on first try!Yay! I got it!