「Is~it~so~」
Although she says like she doesn’t matter but as she’s giving looks here, it perhaps means that she didn’t hate it so much.
Is her mood somehow finally up? He thinks that……it’s a bit troublesome but surprisingly for Oulu, it didn’t feel that much unpleasant.
Oulu decided to not tell her that the kissing is the most efficient way to transfer mana, turns around the magic circle, sits down properly and begun to chant a long spell.