Drama that includes school trips/stuck in a room scenario/bonding/intimate moments

As the title suggests, I'm looking for a drama where the characters go in a school trip, or are stuck in a room or place and they bond as a result. An example is the scene where Tsukushi is stuck with Tsukasa in the elevator in Hana Yori Dango (really cute scene). Other scenarios are OK too, but the characters have to bond as a result of that particular scenario (both friendship and love is OK). I really like cute intimate moments even if it's just platonic. If the characters were enemies or didn't get along well before, it's a plus.

School 2013 - 2boys have a past together and now meet again. They try to keep the distance but end up living together because of circumstances. Really cute friendship and bromance.

Dream High - don't remember the reason anymore but 3 students has to live together at the teachers house (cute and funny moments)

Kill me heal me (they get locked up in a basement)
Fated to love you (korean)  (they are locked up by the female lead's mom on a room)

Boy next door (forced cohabitation)
Mt amazing boyfriend (locked in a freezer)

Kiss Me (Thai version of Playful Kiss. It is really good and isn't the exact same plot.)

So far I watched Boy Next Door. It was totally what I was looking for. Any other suggestions? 

HIgh End Crush, he climbs a mountain trying to find her only to get stuck there with her