Just a bit of advice for the Gyaru's childhood friend (My apologies for NOT remembering your names): Woman will chase men who are chasing their dream. If you don't have a dream, other than making her happy, you should get one. Work towards that, don't focus on her, chase your passion, and she may want to be in your life. I've seen it too many times.
Also, for the gyaru friend: Listen, I like you ... but you need to step off. On one hand, I appreciate that you are forcing the relationship between Manabu and Megumi to progress. On the OTHER hand, the man is taken. Hands off, LOL. Megumi will BREAK you.