Please, if there's one worry Inigo doesn't have right here and now, it's for his own safety in this regard. They're already in a precarious enough position when it comes to their current existence thanks to whatever the train did to them - so having this on top of it doesn't feel all that more dangerous to Inigo.

Besides, he'd feel worse not having even tried to help Taiki. How could he put his own wellbeing over Taiki's comfort and happiness?

"I'm sure."

It's why his tone doesn't waver as he says it.

"As long as you think it even has a faint possibility of helping things out here, then I'm willing to try it. This is a unique chance." After all.. he's the last remainder of Gyousou's ouki here. He doesn't say it out loud, not wanting to make the other feel sad at the thought, but Inigo sure knows it in his heart.

Maybe it's the reason he still has some left within him. Just to make this possible. That everything was all leading up to this chance.