Hi I'm Sarah!
I sort of summarized T-TUN's interviews from the March Popolo since bonjovial & seishun-banzai already translated Kame's and Jin's parts.
I'm sorry that these are just summaries, I may do the translation later when I'm less busy! :) Koki and Nakamaru's are slightly longer cuz I did those when I had more time! Sorry!

Taguchi
time to fall in love: machi-machi (it's different for each person)
He says that he'd like to fall in love with someone by bumping into each other, then their eyes meet, and saying "aaa..." fall in love!
He said he's okay with going on a date anywhere. Inside or outside.
If it's outside, they could walk dogs together. He said that if she threw a frisbee, he would run and catch it!
If he could choose, he'd want to go an amusement park together.
He wants about 3 kids. He'd let his wife to what she wants. (in terms of working and stuff)

Ueda
Time to fall in love: 1 week
He wants to first meet someone by bumping into them and thinking "What's with this person?" Then, by coincidence meeting that person again and getting to know them! He talks about one time seeing a really cute girl on the train. Then, he never met her on a train again. Then, another time, there were fireworks outside the train. A girl exclaimed "Fireworks!" and her face when she turned around was really cute. He says this is just feeling the "doki" (when your heart pounds) and he's never met them again.
He says if he liked a girl he'd say, "Tsukiauyo" "Let's go out"
Then he says that he'd like to get married someday!

Koki
Time to fall in love: 1 second ~ eternity
He says love is all about feeling and It doesn't matter how we meet.
He says that when he falls in love it's probably very obvious. He doesn't look at anyone else and he's very kind to her. One-sided love is ok too.
The doki-doki (nervous) feeling of wondering if she likes him back is good too. Wanting to see her so much that it's heartbreaking is good too. So he thinks one-sided love is great too. Too confess to a girl he'd say "I want to be with you forever." He doesn't want to just say "Suki" (I like you) because even a guy who thinks about her less than I do can say that.
If it's winter, he wants to go snowboarding for a date. He wants to be with the girl he likes all the time. Because, out of all the people that we meet in life, the fact that us two are together is an amazing thing, he says.
That's way he wants them to spend as much time together as possible.
Some people say, he says, that after they get married they realize their partner's bad points. He thinks it's better to be together so much before you get married, that you already know each other's bad points. If you only figure them out later, that's your own fault for not watching your partner enough. He wants to always watch the girl to find out more about her and show her about himself too. He says he puts so much into his one love that he gets tired himself. But, doing that, forming a bond with the girl, and always being together, tightly holding hands and walking is his dream.

Nakamaru
Time to fall in love: 2 seconds or 30-60 days
Once, he confessed to this girl I really like after school at the park. Then they played togeter in the park. Then they went to her house and played cards. He considered that like a date. Even looking at that girl's name would make him "doki-doki" (nervous) It was a very pure love.
When you become an adult you might not be able to do that anymore, but for a date if we're together anything would be fun he says. He likes watching movies, going to the aquarium, or going to the zoo. I'd like the girl to enjoy those things with me too.
For special dates, he would want to get something that helps him remember that day. Like when you see it you think "That time, we went there huh?"
He wants to someday do that with a family too. Having kids and pets.
And going out in the family car saying "Let's go get something yummy to eat!"
That would be happiness he says.
One time, he say a family at a park. They looked really happy. The dad was playing with the kid in the sand, and the mom was just watching but it looked very fun. He wants to have that kind of family.
But first, he needs to find a partner. But he's too shy. He won't even look at the girl. He doesn't really find chances to confess. He thinks being friends and having a natural feeling is a good way to start!

~Sarah

PS: Comments would be loved!!! <333