Final Script could see alterations made to lines. 

Oguri is having an argument with Kitahara about her new diet plan. 

Main role of the skit and has the most number of lines. No real voice in particular but calm, steady, and composed would work the best. Just don't sound super young or old and of course show emotion if lines call for it. If you've seen the anime try and match Oguris personality. If you want to do multiple takes to experiment with different voices that's fine. P.S, please have decent set up, doesn't have to be wonderful just no background noise. 

Reference if needed: https://www.youtube.com/watch?v=O0JrnN7Lpc8