Len'en 1 EE | Perfect Unreal stage 3 Suzumi (NMNBNFB)
3I more or less have this stage to blame for getting me into Len'en initially. This was the first stage in Len'en that actually really interested me and it was also the first theme I heard that I thought was really good. I wanted to do this with Yabusame but after constantly losing attempts to Tsuba's penult and final I just gave up. Yes I'm aware that it's Tsurubami.
Anyways, Tsuba's fight is not all that difficult. Past her opener you don't really have to worry about much till the last two attacks. It's easy to screw up on though and the RNG in some attacks can screw you over too but outside of that it's not that bad. Her final can go die though.
Suzumi is a very weird shot. She can be very difficult to master but once you do she's the best shot in the game for survival purposes as she can destroy some attacks. She makes Tsuba's fight a lot easier as she basically only has to endure half as much as Yabu. The only downside to her is the relatively bad flashbomb. It's extremely broken in BPoHC but here not as much. Though unlike Tsuba and Yabu she makes up for having a weak flashbomb. Regardless, after learning some stage sections getting this was incredibly easy.