User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-1359322-20141119194655/@comment-1359322-20141120204534

So when its Issei and Asia, who both also share a strong sibling like bond, it's ok for them to be lovers, but when it's Gasper and Valerie, we need confirmation or it's too early or we still need to see how this goes. I still remember back then there were even people saying Valerie is "too old" for Gasper, yet those are the same people who ships Gabriel or Serafall who are like centuries older than Issei and it's okay for what reason? Because it's Issei, if that's the case that's just being biased.

Like in this Volume, Ishibumi introduced Tosuka, are people going to say that Yuuto and Tosuka share a sibling bond or companionship since they know each other from way long and won't be lovers as well.

So in the end, i guess we'll just follow the usual trend then, it'll just be the usual Issei will get Valerie and Tosuka as his girls as well, Yuuto and Gasper can just fuck off. Hooray for Issei, he gets more girls and retains the guys who are like gays who can't graduate from sitting on laps or making lunch box for Issei. And eventually it won't be long before Issei conquers all the Sitri girls too, Sona, Tsubaki, etc all of them would just fall for Issei eventually.

I know this sounds a bit extreme, but just like how Issei had his biggest character development when he confess to Rias. To me, Ishibumi is setting up for further character development for Gasper and Yuuto. Otherwise why did he bother to introduce Valerie and Tosuka, girls who are from both the guy's past and have great importance to them. Like i said before, Yuuto's character has started to become stale as of late but now with Tosuka appearing, things have started to change for him, and Gasper might have just face an one-time character development if it weren't for the enemy taking Valerie's Sephiroth Graal, giving Gasper a proper reason to fight aside from fighting alongside his friends.