The Girl I Saved on the Train Turned Out to Be My Childhood Friend, Vol. 8 (manga)

The school trip has just started, and Hina-s already snuck into Ryou-s room! She-s coming on strong, but how will he respond? Plus, Hina-s not the only one trying to make a move-the next day is Torigoe and Ryou-s souvenir shopping date! Though, when Hina accidentally sees them getting along, she takes a hit to her resolve that might be tough to recover from...