Drilling Through The Heavens With You

Nia, a former princess and now head cook of Dai-Gurren, is experiencing some unknown changes in her mood around her friend, Simon. She questions what the feelings are, while the effects lead to blushing, being shy, and having a wanting. She proceeds to question what that wanting is called. Meanwhile Simon already knows his feelings towards her, but are both people sharing the same emotions toward eachother?